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Rakib MRH, Messina V, Gargiulo JI, Lyons NA, Garcia SC. Potential use of HSP70 as an indicator of heat stress in dairy cows - a review. J Dairy Sci 2024:S0022-0302(24)01096-8. [PMID: 39218068 DOI: 10.3168/jds.2024-24947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 07/16/2024] [Indexed: 09/04/2024]
Abstract
Heat stress (HS) poses significant challenges to the dairy industry, resulting in reduced milk production, impaired reproductive performance, and compromised animal welfare. Therefore, understanding the molecular mechanisms underlying cellular responses to HS is crucial for developing effective strategies to mitigate its adverse effects. Heat shock protein 70 (HSP70) has emerged as a potential player involved in cellular thermotolerance in dairy cows. This review provides a comprehensive overview of the role of HSP70 as a molecular chaperone in cellular thermotolerance in dairy cows under HS. HSP70 facilitates proper protein folding and prevents the aggregation of denatured proteins. By binding to misfolded proteins, it helps maintain protein homeostasis and prevents the accumulation of damaged proteins during HS. Additionally, HSP70 interacts with various regulatory proteins and signaling pathways, contributing to the cellular adaptive response to HS. The upregulation of HSP70 expression in response to HS is regulated by a complex network involving heat-shock factors (HSFs), heat-shock element-binding proteins, and HSF co-chaperones. Therefore, HSP70 holds the potential to be a useful indicator of tissue stress due to its role in maintaining cellular balance, and as it is released both inside and outside cells in response to stress. Traditional methods of measuring HSP70 in blood samples are labor-intensive, and with the process being potentially stressful for the animals and may subsequently affect the results. Therefore, measuring HSP expression in cow's milk has shown promise as an easy, non-invasive, and accurate way to detect HS in dairy cows. Monitoring HSP70 levels in milk can be applied as a supplementary approach to identify HS or HS resistance of individual cows, selection of suitable animals and to guide targeted management strategies. However, despite the potential advantages of using HSP70 as a biomarker for monitoring HS on dairy cows, challenges remain in standardizing measurement protocols, establishing species-specific reference ranges, addressing inter-individual variations, and determining the specificity of changes in HSP70 due to HS. Future research should focus on developing non-invasive techniques for HSP70 detection, with consideration of climatic conditions, and unravelling the molecular interactions and regulatory networks involving HSP70.
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Affiliation(s)
- M R H Rakib
- Dairy Science Group, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia; Bangladesh Livestock Research Institute, Savar, Dhaka 1341, Bangladesh.
| | - V Messina
- Dairy Science Group, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia
| | - J I Gargiulo
- Dairy Science Group, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia; NSW Department of Primary Industries and Regional Development, Menangle, NSW 2568, Australia
| | | | - S C Garcia
- Dairy Science Group, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden, NSW 2570, Australia
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2
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Weinert-Nelson JR, Jacobs AA, Werner J, Williams CA, Davis BE. Impacts of heat stress on the accuracy of a noseband sensor for detection of eating and rumination behavior in confined cattle. JDS COMMUNICATIONS 2024; 5:350-355. [PMID: 39220836 PMCID: PMC11365311 DOI: 10.3168/jdsc.2023-0524] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/05/2024] [Indexed: 09/04/2024]
Abstract
Precision monitoring of feeding behaviors can aid in dairy herd management. Noseband sensors (RumiWatch System [RW]; Itin + Hoch GmbH) have been established as an automated gold standard for evaluating precision technologies in grazing cows, but more advanced algorithms have not been validated in confinement settings. Additionally, little is known regarding effects of environmental conditions on sensor performance. Therefore, accuracy of RW in quantifying eating and rumination time in confinement was evaluated using 2 versions of the analysis software algorithms (RW Converter V.7.3.2 and V.7.3.36) under thermoneutral (TN; 21.0°C, 64.0% relative humidity [RH], temperature-humidity index [THI] = 67) and heat stress conditions (HS; cyclical daily temperatures to mimic diurnal patterns; 0700-1900 h: 33.6°C, 40.0% RH, THI = 83.5; 1900-0700 h: 23.2°C, 70.0% RH; THI = 70.3). Nine individually housed Holstein × Simmental cross steers were fitted with RW noseband sensors. Agreement for eating time reported by RW and visual observations (1-min scan sampling) was very high in TN regardless of software version (concordance correlation coefficient [CCC]: V.7.3.2 = 0.91; V.7.3.36 = 0.94), and remained high to very high (CCC: V.7.3.2 = 0.89; V.7.3.36 = 0.95) during HS. Agreement for rumination time was very high regardless of software version in both TN (CCC: V.7.3.2 = 0.93; V.7.3.36 = 0.99) and HS (CCC: V.7.3.2 = 0.91; V.7.3.36 = 0.99). Overall, RW accurately quantified eating and ruminating time in confined cattle, and noseband sensors retained accuracy during heat stress. These results indicate RW may serve as a benchmark for future precision technology validations in dairy cattle managed in confinement systems.
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Affiliation(s)
- Jennifer R. Weinert-Nelson
- United States Department of Agriculture, Agricultural Research Service, Forage-Animal Production Research Unit, Lexington, KY 40506
| | - Alayna A. Jacobs
- United States Department of Agriculture, Agricultural Research Service, Forage-Animal Production Research Unit, Lexington, KY 40506
| | - Jessica Werner
- Animal Nutrition and Rangeland Management in the Tropics and Subtropics, University of Hohenheim, Stuttgart, Germany, 70599
| | - Carey A. Williams
- Department of Animal Sciences, Rutgers University, New Brunswick, NJ 08901
| | - Brittany E. Davis
- United States Department of Agriculture, Agricultural Research Service, Forage-Animal Production Research Unit, Lexington, KY 40506
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3
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Danso F, Iddrisu L, Lungu SE, Zhou G, Ju X. Effects of Heat Stress on Goat Production and Mitigating Strategies: A Review. Animals (Basel) 2024; 14:1793. [PMID: 38929412 PMCID: PMC11200645 DOI: 10.3390/ani14121793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/05/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Goats, versatile creatures selectively bred for various purposes, have become pivotal in shaping the socioeconomic landscape, particularly in rural and economically challenged areas. Their remarkable ability to withstand and adapt to extreme heat has proven invaluable, allowing them to flourish and reproduce in even the harshest climates on Earth. Goat farming has emerged as a reliable and sustainable solution for securing food resources. However, despite its significance, the goat-producing industry has received less attention than other ruminants. Despite goats' inherent resilience to heat, their productivity and reproductive performance suffer under high ambient temperatures, leading to heat stress. This presents a significant challenge for goat production, necessitating a comprehensive multidisciplinary approach to mitigating the adverse effects of heat stress. This review aims to explore the diverse impacts of heat stress on goats and propose effective measures to address the sector's challenges. By understanding and addressing these issues, we can enhance the resilience and sustainability of goat farming, ensuring its continued contribution to food security and socioeconomic development.
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Affiliation(s)
- Felix Danso
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (F.D.); (S.E.L.)
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang 524088, China
| | - Lukman Iddrisu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China;
| | - Shera Elizabeth Lungu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (F.D.); (S.E.L.)
| | - Guangxian Zhou
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (F.D.); (S.E.L.)
| | - Xianghong Ju
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (F.D.); (S.E.L.)
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang 524088, China
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4
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Chen L, Thorup VM, Kudahl AB, Østergaard S. Effects of heat stress on feed intake, milk yield, milk composition, and feed efficiency in dairy cows: A meta-analysis. J Dairy Sci 2024; 107:3207-3218. [PMID: 38101736 DOI: 10.3168/jds.2023-24059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/19/2023] [Indexed: 12/17/2023]
Abstract
Heat stress compromises dairy production by decreasing feed intake and milk yield, and it may also alter milk composition and feed efficiency. However, little information is available for evaluating such effects across different levels of heat stress and cows enrolled in heat stress studies. The objectives of this study were to evaluate the effects of heat stress on dry matter intake (DMI), energy-corrected milk (ECM), milk composition, and feed efficiency (kg ECM/kg DMI) and to investigate the relationship between such effects and heat stress intervention and animal characteristics by using meta-analytical approaches. Data from 31 studies (34 trials) fulfilled the inclusion criteria and were used for analysis. Results showed that heat stress decreased DMI, ECM, and milk protein concentration, but did not alter milk fat concentration or feed efficiency. Meta-regression confirmed that such reductions in DMI and ECM were significantly associated with increasing temperature-humidity index (THI). Over the period of heat stress, for each unit increase in THI, DMI and ECM decreased by 4.13% and 3.25%, respectively, in mid-lactation cows. Regression models further revealed the existence of a strong interaction between THI and lactation stage, which partially explained the large heterogeneity in effect sizes of DMI and ECM. The results indicated a need for more research on the relationship between the effect of heat stress and animal characteristics. This study calls for the implementation of mitigation strategies in heat-stressed herds due to the substantial decrease in productivity.
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Affiliation(s)
- L Chen
- Department of Animal and Veterinary Sciences, Aarhus University, Tjele 8830, Denmark.
| | - V M Thorup
- Department of Animal and Veterinary Sciences, Aarhus University, Tjele 8830, Denmark
| | - A B Kudahl
- Department of Animal and Veterinary Sciences, Aarhus University, Tjele 8830, Denmark
| | - S Østergaard
- Department of Animal and Veterinary Sciences, Aarhus University, Tjele 8830, Denmark
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5
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Chopra K, Hodges HR, Barker ZE, Vázquez Diosdado JA, Amory JR, Cameron TC, Croft DP, Bell NJ, Thurman A, Bartlett D, Codling EA. Bunching behavior in housed dairy cows at higher ambient temperatures. J Dairy Sci 2024; 107:2406-2425. [PMID: 37923206 PMCID: PMC10982438 DOI: 10.3168/jds.2023-23931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023]
Abstract
Bunching behavior in cattle may occur for several reasons including enabling social interactions, a response to stress or danger, or due to shared interest in resources such as feeding or watering areas. There is evidence in pasture grazed cattle that bunching may occur more frequently at higher ambient temperatures, possibly due to sharing of fly-load or to seek shade from the direct sun under heat stress conditions. Here we demonstrate how bunching behavior is associated with higher ambient temperatures in a barn-housed UK dairy herd. A real-time local positioning system was used, as part of a precision livestock farming (PLF) approach, to track the spatial position and activity of a commercial dairy herd (∼100 cows) in a freestall barn continuously at high temporal resolution for 4 mo between August and November 2014. Bunching was determined using 4 different spatial measures determined on an hourly basis: herd full and core range size, mean herd intercow distance (ICD), and mean herd nearest-neighbor distance (NND). For hourly mean ambient temperatures above 20°C, the herd showed higher bunching behavior with increasing ambient temperature (i.e., reduced full and core range size, ICD, and NND). Aggregated space-use intensity was found to positively correlate with localized variations in temperature across the barn (as measured by animal-mounted sensors), but the level of correlation decreased at higher ambient barn temperatures. Bunching behavior may increase localized temperatures experienced by individuals and hence may be a maladaptive behavioral response in housed dairy cattle, which are known to suffer heat stress at higher temperatures. Our study is the first to use high-resolution positional data to provide evidence of associations between bunching behavior and higher ambient temperatures for a barn-housed dairy herd in a temperate region (UK). Further studies are needed to explore the exact mechanisms for this response to inform both welfare and production management.
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Affiliation(s)
- Kareemah Chopra
- Department of Mathematical Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom.
| | - Holly R Hodges
- Writtle University College, Chelmsford, Essex, CM1 3RR, United Kingdom
| | - Zoe E Barker
- Writtle University College, Chelmsford, Essex, CM1 3RR, United Kingdom
| | - Jorge A Vázquez Diosdado
- Department of Mathematical Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom
| | - Jonathan R Amory
- Writtle University College, Chelmsford, Essex, CM1 3RR, United Kingdom
| | - Tom C Cameron
- School of Life Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom
| | - Darren P Croft
- Centre for Research in Animal Behaviour, Faculty of Health and Life Sciences, University of Exeter, Exeter, Devon, EX4 4QG, United Kingdom
| | - Nick J Bell
- Royal Veterinary College, Hatfield, Hertfordshire, AL9 7TA, United Kingdom
| | - Andy Thurman
- Omnisense Limited, St. Neots, Cambridgeshire, PE19 6WL, United Kingdom
| | - David Bartlett
- Omnisense Limited, St. Neots, Cambridgeshire, PE19 6WL, United Kingdom
| | - Edward A Codling
- Department of Mathematical Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom
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6
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Stefanska B, Sobolewska P, Fievez V, Pruszynska-Oszmałek E, Purwin C, Nowak W. The effect of heat stress on performance, fertility, and adipokines involved in regulating systemic immune response during lipolysis of early lactating dairy cows. J Dairy Sci 2024; 107:2111-2128. [PMID: 37923214 DOI: 10.3168/jds.2023-23804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023]
Abstract
The aim of this study was to assess the potential effect of heat stress on dairy cow productivity, fertility, and biochemical blood indices during the early lactation stage in a temperate climate. Additionally, the study aimed to determine the role of leptin and adiponectin in regulating the immune response accompanying lipolysis after calving in dairy cows. The study included 100 clinically healthy Polish Holstein-Friesian dairy cows selected based on parity and 305 d of milk yield from 5 commercial farms with similar herd management and housing systems. Prospective cohort data were recorded from calving day until 150 d in milk, and microclimate loggers installed inside the barns were used to record temperature and relative humidity data to calculate daily temperature-humidity index (THI) on the calving day, through +7, +14, and +21 d during early lactation. Additionally, monthly productive performance parameters such as milk yield, chemical composition, fatty acids composition, and fertility indices were analyzed. Results showed that the THI from calving day through +7, +14, and +21 d during early lactation was negatively associated with fertility parameters such as delayed first estrus postpartum and an elongated calving interval, respectively, by 29, 27, 25, and 16 d. Furthermore, an increase in THI value during early lactation was associated with an elongated artificially inseminated service period, days open, and intercalving period. Increasing THI from calving day (0 d) through +7, +14, and up to +21 d during early lactation was also linked to decreased milk yield by 3.20, 4.10, 5.60, and 5.60 kg, respectively. The study also found that heat stress during early lactation was associated with a lower body condition score in dairy cows and higher concentrations of leptin, nonesterified fatty acids, and β-hydroxybutyrate, accompanied by a drastic reduction in adipose tissue-secreted adiponectin levels after calving. Additionally, heat stress-induced lipolysis in adipose tissue caused an inflammatory response that increased biochemical blood indices associated with immune responses such as cytokines, acute phase proteins, and heat shock protein. These findings suggest that exposing dairy cows to heat stress during early lactation can negatively affect their productive performance, fertility, and biochemical blood indices in subsequent lactations. Thus, farm management changes should be implemented during early lactation to mitigate the negative consequences of heat stress occurrence.
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Affiliation(s)
- B Stefanska
- Department of Grassland and Natural Landscape Sciences, Poznań University of Life Sciences, 60-632 Poznań, Poland.
| | - P Sobolewska
- Department of Grassland and Natural Landscape Sciences, Poznań University of Life Sciences, 60-632 Poznań, Poland
| | - V Fievez
- Department of Animal Sciences and Aquatic Ecology, Ghent University, 9000 Gent, Belgium
| | - E Pruszynska-Oszmałek
- Department of Animal Physiology, Biochemistry, and Biostructure, Poznań University of Life Science, 60-637 Poznań, Poland
| | - C Purwin
- Department of Animal Nutrition, Feed Science, and Cattle Breeding, University of Warmia and Mazury, 10-719 Olsztyn, Poland
| | - W Nowak
- Department of Animal Nutrition, Poznań University of Life Sciences, 60-637 Poznań, Poland
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7
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Jo JH, Jalil GN, Kim WS, Moon JO, Lee SD, Kwon CH, Lee HG. Effects of Rumen-Protected L-Tryptophan Supplementation on Productivity, Physiological Indicators, Blood Profiles, and Heat Shock Protein Gene Expression in Lactating Holstein Cows under Heat Stress Conditions. Int J Mol Sci 2024; 25:1217. [PMID: 38279240 PMCID: PMC10816680 DOI: 10.3390/ijms25021217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
In this study, we examined the effects of rumen-protected L-tryptophan supplementation on the productivity and physiological metabolic indicators in lactating Holstein cows under heat stress conditions. The study involved eight early lactating Holstein cows (days in milk = 40 ± 9 days; milk yield 30 ± 1.5 kg/day; parity 1.09 ± 0.05, p < 0.05), four cows per experiment, with environmentally controlled chambers. In each experiment, two distinct heat stress conditions were created: a low-temperature and low-humidity (LTLH) condition at 25 °C with 35-50% humidity and a high-temperature and high-humidity (HTHH) condition at 31 °C with 80-95% humidity. During the adaptation phase, the cows were subjected to LTLH and HTHH conditions for 3 days. This was followed by a 4-day heat stress phase and then by a 7-day phase of heat stress, which were complemented by supplementation with rumen-protected L-tryptophan (ACT). The findings revealed that supplementation with ACT increased dry matter intake as well as milk yield and protein and decreased water intake, heart rate, and rectal temperature in the HTHH group (p < 0.05). For plateletcrit (PCT, p = 0.0600), the eosinophil percentage (EOS, p = 0.0880) showed a tendency to be lower, while the monocyte (MONO) and large unstained cells (LUC) amounts were increased in both groups (p < 0.05). Albumin and glucose levels were lower in the HTHH group (p < 0.05). The gene expressions of heat shock proteins 70 and 90 in the peripheral blood mononuclear cells were higher in the ACT group (HTHH, p < 0.05). These results suggest that ACT supplementation improved productivity, physiological indicators, blood characteristics, and gene expression in the peripheral blood mononuclear cells of early lactating Holstein cows under heat-stress conditions. In particular, ACT supplementation objectively relieved stress in these animals, suggesting that L-tryptophan has potential as a viable solution for combating heat-stress-induced effects on the cattle in dairy farming.
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Affiliation(s)
- Jang-Hoon Jo
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Republic of Korea; (J.-H.J.); (G.N.J.)
| | - Ghassemi Nejad Jalil
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Republic of Korea; (J.-H.J.); (G.N.J.)
| | - Won-Seob Kim
- Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA;
| | - Jun-Ok Moon
- Institute of Integrated Technology, CJ CheilJedang, Suwon 16495, Republic of Korea;
| | - Sung-Dae Lee
- Animal Nutrition and Physiology Team, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea;
| | - Chan-Ho Kwon
- Department of Animal Science, Kyungpook National University, Sangju 37224, Republic of Korea;
| | - Hong-Gu Lee
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Republic of Korea; (J.-H.J.); (G.N.J.)
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8
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Nielsen PP, Wredle E. How Does the Provision of Shade during Grazing Affect Heat Stress Experienced by Dairy Cows in Sweden? Animals (Basel) 2023; 13:3823. [PMID: 38136860 PMCID: PMC10740924 DOI: 10.3390/ani13243823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/20/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Heat stress in dairy cows can cause an increase in body temperature and respiration rate, and a decreased feed intake leading to reduced production. Dairy cows are better at handling heat when they have access to shade. Therefore, this study aimed to determine the effects of providing shade to high-yielding dairy cattle during the summer in the Swedish climate. Twenty high-yielding Swedish Red dairy cows, held on pasture, were divided into two groups, one with access to shade (S) and one without (NS). Milk production was recorded daily and shade temperature and relative humidity were recorded at 10 min intervals at pasture. A major effect of heat stress was found in cows in early lactation in the NS group. In this group, a high mean temperature two days before and a high THI two days before affected the milk production negatively (p < 0.001), which was the same for the maximum temperature and maximum THI measured on the same day (p < 0.001). Increases in the mean temperature and THI two days before also affected milk production negatively (p < 0.05) for cows in early lactation in the S group, though to a lesser extent. This study suggests that dairy cows in early lactation benefit from access to shade during summer.
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Affiliation(s)
- Per Peetz Nielsen
- Department of Agriculture and Food, Division of Bioeconomy and Health, RISE Research Institute of Sweden, RISE Ideon, 223 70 Lund, Sweden
| | - Ewa Wredle
- Department on Animal Nutrition and Management, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden;
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9
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Koknaroglu H, Harrington JA, Mader TL, Larsen TB. Determination of climatologically suitable places in Türkiye for feedlot cattle production using the Comprehensive Climate Index model. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:1813-1824. [PMID: 37646866 DOI: 10.1007/s00484-023-02541-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 06/14/2023] [Accepted: 08/09/2023] [Indexed: 09/01/2023]
Abstract
The purpose of this study was to determine climatologically suitable places to raise feedlot cattle in Türkiye. The Comprehensive Climate Index (CCI), a model that enables one to quantify beef cattle performance based on environmental conditions (temperature, relative humidity, wind speed, solar radiation) at any time in the year, was used to predict dry matter intake (DMI), average daily gain (ADG), and feed efficiency (FE) of feedlot cattle. Thirty years of daily average temperature, relative humidity, and wind speed values were obtained for 15 cities, namely, Antalya, Balikesir, Çorum, Diyarbakir, Edirne, Elazig, Erzincan, Erzurum, Eskisehir, Isparta, Izmir, Kayseri, Konya, Sivas, and Van. Measured daily solar radiation values were not available and values were calculated based on a formula that takes hemisphere, latitude, and day of the year into account. Since mostly dairy breed calves are placed into a feedlot in Türkiye, the Holstein option in the CCI model was chosen to calculate the maintenance energy requirement. Based on previous feedlot feeding studies conducted in Türkiye, it was assumed that calves would be placed on feed at 250 kg and be marketed at 520 kg, that the diet would have 2600 kcal/kg metabolic energy, and that DMI would be 2.31% of the body weight. Results indicate that cattle raised in Antalya (the hottest place) and Erzurum (the coldest place) had the lowest and highest DMI, respectively (P<0.05). Summer months depressed the DMI of cattle in hotter cities and winter months increased the DMI of cattle in colder cities (P<0.05). Feedlot cattle raised in hotter and colder regions of Türkiye had lower ADG than other places having a more temperate climate (P<0.05). In general, cattle raised in a hotter climate had better FE than those raised in a cold climate (P<0.05).
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Affiliation(s)
- Hayati Koknaroglu
- Department of Animal Science, Isparta University of Applied Sciences, Isparta, Türkiye.
| | | | | | - Thomas B Larsen
- Department of Geography, University of Northern Iowa, Cedar Falls, IA, USA
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10
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Dovolou E, Giannoulis T, Nanas I, Amiridis GS. Heat Stress: A Serious Disruptor of the Reproductive Physiology of Dairy Cows. Animals (Basel) 2023; 13:1846. [PMID: 37889768 PMCID: PMC10252019 DOI: 10.3390/ani13111846] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Global warming is a significant threat to the sustainability and profitability of the dairy sector, not only in tropical or subtropical regions but also in temperate zones where extreme summer temperatures have become a new and challenging reality. Prolonged exposure of dairy cows to high temperatures compromises animal welfare, increases morbidity, and suppresses fertility, resulting in devastating economic losses for farmers. To counteract the deleterious effects of heat stress, cattl e employ various adaptive thermoregulatory mechanisms including molecular, endocrine, physiological, and behavioral responses. These adaptations involve the immediate secretion of heat shock proteins and cortisol, followed by a complex network of disrupted secretion of metabolic and reproductive hormones such as prolactin, ghrelin, ovarian steroid, and pituitary gonadotrophins. While the strategic heat stress mitigation measures can restore milk production through modifications of the microclimate and nutritional interventions, the summer fertility records remain at low levels compared to those of the thermoneutral periods of the year. This is because sustainment of high fertility is a multifaceted process that requires appropriate energy balance, undisrupted mode of various hormones secretion to sustain the maturation and fertilizing competence of the oocyte, the normal development of the early embryo and unhampered maternal-embryo crosstalk. In this review, we summarize the major molecular and endocrine responses to elevated temperatures in dairy cows, as well as the impacts on maturing oocytes and early embryos, and discuss the consequences that heat stress brings about in dairy cattle fertility.
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Affiliation(s)
- Eleni Dovolou
- Laboratory of Reproduction, Faculty of Animal Science, University of Thessaly, 41223 Larissa, Greece;
- Department of Obstetrics & Reproduction, Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece;
| | - Themistoklis Giannoulis
- Laboratory of Genetics, Faculty of Animal Science, University of Thessaly, 41223 Larissa, Greece;
| | - Ioannis Nanas
- Department of Obstetrics & Reproduction, Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece;
| | - Georgios S. Amiridis
- Department of Obstetrics & Reproduction, Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece;
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11
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Rhoads ML. Review: Reproductive consequences of whole-body adaptations of dairy cattle to heat stress. Animal 2023; 17 Suppl 1:100847. [PMID: 37567679 DOI: 10.1016/j.animal.2023.100847] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 08/13/2023] Open
Abstract
Heat stress has far-reaching ramifications for agricultural production and the severity of its impact has increased alongside the growing threats of global warming. Climate change is exacerbating the already-severe consequences of seasonal heat stress and is predicted to cause additional losses in reproductive performance, milk production and overall productivity. Estimated and predicted losses are staggering, and without advancement in production practices during heat stress, these projected losses will threaten the human food supply. This is particularly concerning as the worldwide population and, thus, demand for animal products grows. As such, there is an urgent need for the development of technologies and management strategies capable of improving animal production capacity and efficiency during periods of heat stress. Reproduction is a major component of animal productivity, and subfertility during thermal stress is ultimately the result of both reproductive and whole-body physiological responses to heat stress. Improving reproductive performance during seasonal heat stress requires a thorough understanding of its effects on the reproductive system as well as other physiological systems involved in the whole-body response to elevated ambient temperature. To that end, this review will explore the reproductive repercussions of whole-body consequences of heat stress, including elevated body temperature, altered metabolism and circulating lipopolysaccharide. A comprehensive understanding of the physiological responses to heat stress is a prerequisite for improving fertility, and thus, the overall productivity of dairy cattle experiencing heat stress.
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Affiliation(s)
- M L Rhoads
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24061, USA.
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12
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Mossa F, Evans ACO. Review: The ovarian follicular reserve - implications for fertility in ruminants. Animal 2023; 17 Suppl 1:100744. [PMID: 37567673 DOI: 10.1016/j.animal.2023.100744] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 08/13/2023] Open
Abstract
Ruminants are born with a finite number of healthy ovarian follicles and oocytes (ovarian reserve) and germ cell proliferation in the developing foetal gonad predominantly occurs during early gestation. Two markers have been established to reliably estimate the size of the ovarian reserve in cattle: the number of antral follicles ≤3 mm in diameter recruited per follicular wave (Antral Follicle Count, AFC) and peripheral concentrations of the Anti-Müllerian hormone (AMH). Studies that used one or both indicators show that the size of ovarian reserve varies greatly among age-matched individuals, but is highly repeatable in the same animal. Conditions during prenatal life are likely among the causes of such variation in the ovarian reserve. In addition, the size of the ovarian reserve is a moderately heritable trait in cattle. The association between ovarian reserve and fertility is controversial. Several studies indicate that cattle with a low ovarian reserve have phenotypic characteristics that are associated with suboptimal fertility. On the contrary, the presence and absence of a positive association between AFC and/or AMH and fertility measures (i.e. no. on services/conception, pregnancy rates, pregnancy loss) have been equally reported in cattle. In conclusion, the size of the ovarian reserve in the progeny can be enhanced by improving management of the dam from preconception to early gestation and also through genetic selection. However, although the ovarian reserve may be among the determinants of reproductive success in ruminants, the use of AFC/AMH as reliable predictors of fertility is yet to be established. Furthermore, the possibility that there is a complex interaction of AFC, AMH and reproduction has yet to be fully characterised and exploited to improve fertility in cattle.
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Affiliation(s)
- F Mossa
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| | - A C O Evans
- School of Agriculture and Food Science, College of Health and Agricultural Sciences, University College Dublin, Dublin 4, Ireland
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13
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Effects of changing milking and feeding times on the behaviour, body temperature, respiration rate and milk production of dairy cows on pasture. Appl Anim Behav Sci 2023. [DOI: 10.1016/j.applanim.2023.105895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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14
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Mahendran SA, Blackie N, Wathes DC, Booth RE. Comparison of environment quality measurements between 3 types of calf housing in the United Kingdom. J Dairy Sci 2023; 106:2461-2474. [PMID: 36797181 DOI: 10.3168/jds.2022-22613] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/24/2022] [Indexed: 02/16/2023]
Abstract
Preweaning calves are kept in a range of housing types that offer variable protection against the weather and provide differing internal environments. This cross-sectional observational study assessed the effect of housing type (shed, polytunnel, or hutches) on internal environmental parameters, using 2 blocks of 8-wk measurements from 10 commercial dairy farms in the south of England, covering both summer and winter periods. Continuous measurements for internal and external temperature and humidity were recorded by data logger placed within the calf housing and used to calculate the temperature-humidity index (THI). Weekly point readings were also taken for temperature, humidity, light, air speed, ammonia level, and airborne particulate matter. Airborne bacterial levels were determined at wk 2, 5, and 8 by incubating air samples at 35°C for 24 h in aerobic conditions. Data were analyzed using linear mixed models. Housing type influenced THI significantly in both seasons. In summer, calves were exposed to heat stress conditions (THI ≥72) for 39, 31, and 14 of 46 d in polytunnel housing, hutches, and sheds, respectively. The maximum summer temperature (37.0°C) was recorded in both hutch and polytunnel housing, with sheds remaining consistently cooler (maximum 31.0°C). In winter, the lowest minimum internal temperature recorded was in hutches at -4.5°C, with both the sheds and polytunnel, but not hutches, providing a significant increase in temperature compared with the external environment. Hutches remained ≤ 10°C for 86% of the winter study period. Light levels were reduced in all housing types compared with the external environment. The particulate matter in air that is capable of reaching the lungs (particulate matter <10 μm) was highest in sheds, intermediate in hutches, and lowest in polytunnel housing (0.97 ± 3.75, 0.37 ± 0.44, and 0.20 ± 0.24 mg/m3, respectively). This was mirrored by airborne bacterial numbers, which were also highest in sheds (8,017 ± 2,141 cfu/m3), intermediate in hutches (6,870 ± 2,084 cfu/m3), and lowest in the polytunnel (3,357 ± 2,572 cfu/m3). Round, white, catalase-positive, and oxidase-negative colonies were most prevalent, likely indicating Staphylococcus species. This study demonstrated that UK calves are routinely exposed to either heat or cold stress, especially when housed in hutches or polytunnels. Sheds had the highest levels of particulate matter and airborne bacteria, both known contributory factors for respiratory disease. These findings demonstrate that all calf housing systems result in environmental compromises that could have long-term impacts on calf health and growth; therefore, further studies should identify husbandry and housing modifications to mitigate these factors.
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Affiliation(s)
- Sophie A Mahendran
- Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA United Kingdom.
| | - Nicola Blackie
- Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA United Kingdom
| | - D Claire Wathes
- Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA United Kingdom
| | - Richard E Booth
- Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA United Kingdom
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15
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Behera R, Chakravarty AK, Kashyap N, Sahu A, Deshmukh B, Dash S. Heat index based identification of critical heat stress zone for production traits in murrah Buffalo under subtropical climate. BIOL RHYTHM RES 2023. [DOI: 10.1080/09291016.2023.2171225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Rajalaxmi Behera
- Animal Genetics and Breeding Division, Regional Station, ICAR-Directorate of Poultry Research, Bhubaneswar, India
| | - Atish Kumar Chakravarty
- Division of Animal Genetics and Breeding, ICAR-National Dairy Research Institute, Karnal, India
| | - Neeraj Kashyap
- Department of Animal Genetics and Breeding, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Adhikari Sahu
- Department of Veterinary Parasitology, Orissa University of Agriculture and Technology, Bhubaneswar, India
| | - Bharti Deshmukh
- Department of Animal Genetics and Breeding, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Soumya Dash
- ICAR- National Institute of Biotic Stress Management, Raipur, India
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16
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Stewart J, Arneson A, Byrd M, Negron-Perez V, Newberne H, White R, El-Kadi S, Ealy A, Rhoads R, Rhoads M. Comparison of production-related responses to hyperinsulinemia and hypoglycemia induced by clamp procedures or heat stress of lactating dairy cattle. J Dairy Sci 2022; 105:8439-8453. [DOI: 10.3168/jds.2022-21922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/12/2022] [Indexed: 11/19/2022]
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17
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Abstract
Understanding the degree to which animals are shifting their phenology to track optimal conditions as the climate changes is essential to predicting ecological responses to global change. Species at low latitudes or high trophic levels are theoretically expected to exhibit weaker phenological responses than other species, but limited research on tropical systems or on top predators impedes insight into the contexts in which these predictions are upheld. Moreover, a lack of phenological studies on top predators limits understanding of how climate change impacts propagate through entire ecosystems. Using a 30-y dataset on endangered African wild dogs (Lycaon pictus), we examined changes in reproductive phenology and temperatures during birthing and denning over time, as well as potential fitness consequences of these changes. We hypothesized that their phenology would shift to track a stable thermal range over time. Data from 60 packs and 141 unique pack-years revealed that wild dogs have delayed parturition by 7 days per decade on average in response to long-term warming. This shift has led to temperatures on birthing dates remaining relatively stable but, contrary to expectation, has led to increased temperatures during denning periods. Increased denning temperatures were associated with reduced reproductive success, suggesting that a continued phenological shift in the species may become maladaptive. Such results indicate that climate-driven shifts could be more widespread in upper trophic levels than previously appreciated, and they extend theoretical understanding of the species traits and environmental contexts in which large phenological shifts can be expected to occur as the climate changes.
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18
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Beale PK, Connors PK, Dearing MD, Moore BD, Krockenberger AK, Foley WJ, Marsh KJ. Warmer Ambient Temperatures Depress Detoxification and Food Intake by Marsupial Folivores. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.888550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ambient temperature is an underappreciated determinant of foraging behaviour in wild endotherms, and the requirement to thermoregulate likely influences food intake through multiple interacting mechanisms. We investigated relationships between ambient temperature and hepatic detoxification capacity in two herbivorous marsupials, the common ringtail possum (Pseudocheirus peregrinus) and common brushtail possum (Trichosurus vulpecula) that regularly feed on diets rich in plant toxins. As an indicator of hepatic detoxification capacity, we determined the functional clearance rate of an anaesthetic agent, Alfaxalone, after possums were acclimated to 10°C [below the thermoneutral zone (TNZ)], 18°C [approximately lower critical temperature (LCT)], and 26°C [approximately upper critical temperature (UCT)] for either 7 days or less than 24 h. We then measured intake of foods with high or low plant secondary metabolite (PSM) concentrations under the same temperature regimes. After 7 days of acclimation, we found a positive correlation between the functional clearance rate of Alfaxalone and ambient temperature, and a negative relationship between ambient temperature and intake of foods with high or low PSM concentrations for both species. The effect of ambient temperature on intake of diets rich in PSMs was absent or reduced when possums were kept at temperatures for less than 24 h. Our results underscore the effects of ambient temperature in hepatic metabolism particularly with respect intake of diets containing PSMs. Given that the planet is warming, it is vital that effects of ambient temperature on metabolism, nutrition and foraging by mammalian herbivores is taken into account to predict range changes of species and their impact on ecosystems.
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19
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Chang-Fung-Martel J, Harrison MT, Brown JN, Rawnsley R, Smith AP, Meinke H. Negative relationship between dry matter intake and the temperature-humidity index with increasing heat stress in cattle: a global meta-analysis. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2021; 65:2099-2109. [PMID: 34283273 PMCID: PMC8566424 DOI: 10.1007/s00484-021-02167-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/24/2021] [Accepted: 06/22/2021] [Indexed: 05/15/2023]
Abstract
Changes in frequency and severity of heat waves due to climate change pose a considerable challenge to livestock production systems. Although it is well known that heat stress reduces feed intake in cattle, effects of heat stress vary between animal genotypes and climatic conditions and are context specific. To derive a generic global prediction that accounts for the effects of heat stress across genotypes, management and environments, we conducted a systematic literature review and a meta-analysis to assess the relationship between dry matter intake (DMI) and the temperature-humidity index (THI), two reliable variables for the measurement of feed intake and heat stress in cattle, respectively. We analysed this relationship accounting for covariation in countries, breeds, lactation stage and parity, as well as the efficacy of various physical cooling interventions. Our findings show a significant negative correlation (r = - 0.82) between THI and DMI, with DMI reduced by 0.45 kg/day for every unit increase in THI. Although differences in the DMI-THI relationship between lactating and non-lactating cows were not significant, effects of THI on DMI varied between lactation stages. Physical cooling interventions (e.g. provision of animal shade or shelter) significantly alleviated heat stress and became increasingly important after THI 68, suggesting that this THI value could be viewed as a threshold for which cooling should be provided. Passive cooling (shading) was more effective at alleviating heat stress compared with active cooling interventions (sprinklers). Our results provide a high-level global equation for THI-DMI across studies, allowing next-users to predict effects of heat stress across environments and animal genotypes.
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Affiliation(s)
- J Chang-Fung-Martel
- Tasmanian Institute of Agriculture, University of Tasmania, Sandy Bay, TAS, 7001, Australia.
- School of Life and Environmental Sciences, The University of Sydney, Camden, NSW, 2570, Australia.
| | - M T Harrison
- Tasmanian Institute of Agriculture, University of Tasmania, Burnie, TAS, 7320, Australia
| | - J N Brown
- CSIRO Oceans and Atmosphere, Castray Esplanade, Battery Point, TAS, 7001, Australia
| | - R Rawnsley
- Tasmanian Institute of Agriculture, University of Tasmania, Burnie, TAS, 7320, Australia
| | - A P Smith
- ICRISAT, Patancheru, 502 324, Telangana, India
| | - H Meinke
- University of Tasmania, Hobart, TAS, 7001, Australia
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20
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Ioannis N, Eleni D, Dimitrios P, Katerina D, Thomas-Markos C, Maria S, Panagiotis G, Georgios S A. Age, gestational and heat stress effects on ghrelin secretion in dairy cattle. Theriogenology 2021; 176:82-93. [PMID: 34597845 DOI: 10.1016/j.theriogenology.2021.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/14/2021] [Accepted: 09/25/2021] [Indexed: 11/27/2022]
Abstract
It is known that heat stress decreases dry matter intake in cattle with impacts on milk production and fertility. Ghrelin is an orexigenic hormone with suppressive effects on reproduction. In this study, we investigated the effects of heat stress and gestational status on ghrelin secretion and its possible associations with DMI in Holstein cattle. The study was conducted in a dairy farm without any artificial cooling measures. The animals were fed a total mixed ration twice daily; each morning the leftovers were removed and weighted. Lactating cows and heifers were used during the winter and the summer; in each season 8 groups were formed as following: non-pregnant cows (n = 10) and non-pregnant heifers (n = 10) and pregnant cows (3 groups, each n = 8) and heifers (3 groups, each n = 10), being at the 1st (days 65-90), the 2nd (days 114-144) and the 3rd (dry cows, days 198-220; heifers, days 192-230) trimester of gestation. In each season the blood samples were collected from all groups on the same day, 1 h prior to morning feeding. In the winter, the Temperature Humidity Index (THI) was 58 in the winter and 73 in the summer. Normal and acidified sera were stored at -20 °C and analyzed for cortisol, total and acylated ghrelin concentrations, respectively. T-Test and Welch-Satterthwaite were performed for continuous data comparison, while two-way ANOVA to test for differences between gestation and season. Feed refusals were higher (p < 0.01) during the summer compared to the winter. In cows, total ghrelin levels differed between gestation stages in winter and summer(p < 0.04), while acylated ghrelin levels differed by gestation stage in winter (p < 0.001) but not in summer. There was an effect of season by the gestational stage in the pattern of acylated (p < 0.001) but not of total ghrelin. In heifers, the pattern of total and acylated ghrelin secretion was not affected by season or gestation stage (p > 0.05). Both in cows and heifers, acylated ghrelin levels were lower in summer compared to winter, (p < 0.002). During the summer months the low ghrelin levels might explain the reduced feed consumption of heat stressed animals. We infer that the lactation-induced altered metabolic status of the animals governed the different ghrelin levels at various gestational stages in cows and heifers.
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Affiliation(s)
- Nanas Ioannis
- Clinic of Obstetrics & Reproduction, Veterinary Faculty, University of Thessaly, Karditsa, Greece
| | - Dovolou Eleni
- Clinic of Obstetrics & Reproduction, Veterinary Faculty, University of Thessaly, Karditsa, Greece; Laboratory of Reproduction, Department of Animal Science, University of Thessaly, Greece
| | - Psimadas Dimitrios
- Laboratory of Nuclear Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Dadouli Katerina
- Clinic of Obstetrics & Reproduction, Veterinary Faculty, University of Thessaly, Karditsa, Greece; Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Chouzouris Thomas-Markos
- Clinic of Obstetrics & Reproduction, Veterinary Faculty, University of Thessaly, Karditsa, Greece
| | - Satra Maria
- Laboratory of Nuclear Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Georgoulias Panagiotis
- Laboratory of Nuclear Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Amiridis Georgios S
- Clinic of Obstetrics & Reproduction, Veterinary Faculty, University of Thessaly, Karditsa, Greece.
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21
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Kim WS, Peng DQ, Jo YH, Nejad JG, Lee HG. Responses of beef calves to long-term heat stress exposure by evaluating growth performance, physiological, blood and behavioral parameters. J Therm Biol 2021; 100:103033. [PMID: 34503778 DOI: 10.1016/j.jtherbio.2021.103033] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/24/2021] [Accepted: 06/13/2021] [Indexed: 11/18/2022]
Abstract
The objective of this study was to explore the responses of beef calves to long-term heat stress (HS) exposure at various levels in comparison with the animals under thermoneutral conditions by evaluating growth performance, physiological, blood, and behavioural parameters. Data were collected from sixteen beef calves (BW: 136.9 ± 6.23 kg; age: 169.6 ± 4.60 d) kept at four stress levels of designated temperature humidity index (THI): threshold (22-24 °C, 60%; THI = 70 to 73), mild (26-28 °C, 60%; THI = 74 to 76), moderate (29-31 °C, 80%; THI = 81 to 83), and severe (32-34 °C, 80%; THI = 89 to 91) stress levels in climatic controlled chambers. Feed and water intake were recorded daily, and body weight was measured once a week. Blood was sampled every three days to analyse metabolite parameters. Dry matter intake (DMI) (p = 0.069, tendency) and blood glucose levels (p = 0.028) were decreased after sudden exposure to HS conditions (severe THI levels). Also, blood cortisol (p = 0.002), glutamic-oxaloacetic transaminase (GOT) (p = 0.009), blood urea nitrogen (BUN) (p = 0.004) and standing time (p = 0.009) were increased in moderate and severe THI levels compared with threshold after exposure to HS conditions. However, in the severe THI group, blood cortisol (p < 0.05), glucose (p < 0.05), GOT (p < 0.05) and BUN (p < 0.05) levels were returned to normal range after 6-13 days of continuous HS exposure. In conclusion, DMI, blood cortisol, GOT, glucose, BUN, and standing time were closely associated with long-term HS condition in beef calves. In addition, calves exposed to HS modulated their physiological responses that resulted in the regulation of the pertinent blood metabolites in the blood to maintain homeostasis during the long-term HS.
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Affiliation(s)
- Won-Seob Kim
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Dong-Qiao Peng
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Yong-Ho Jo
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Jalil Ghassemi Nejad
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hong-Gu Lee
- Department of Animal Science and Technology, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea.
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22
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Grigoletto NTS, Ghizzi LG, Gheller LS, da S Dias MS, Nunes AT, Silva TBP, da Silva GG, Costa E Silva LF, Lobato DN, Rennó FP. Effects of a blend of live yeast and organic minerals or monensin on performance of dairy cows during the hot season. J Dairy Sci 2021; 104:11634-11645. [PMID: 34454761 DOI: 10.3168/jds.2021-20194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/02/2021] [Indexed: 11/19/2022]
Abstract
The objective of this study was to evaluate the effects of feed additives on intake and digestibility of nutrients, milk yield and composition, feeding behavior, and physiological parameters of dairy cows during the hot season. Forty Holstein cows were assigned to a randomized block design experiment with a 2 × 2 factorial treatment arrangement to evaluate (1) control diet without inclusion of additives; (2) monensin (MON), 20 mg/kg diet dry matter sodium monensin (Rumensin; Elanco); (3) Milk Sacc+ (MS+), inclusion of 40 g/cow per d of Milk Sacc+ (a blend of live yeast and organic minerals, Alltech); and (4) combination of MON and MS+. The average temperature-humidity index throughout the experimental period was 73 ± 2.84 (standard deviation). The experiment lasted 11 wk, including 2 preliminary weeks for covariate adjustments. Cows fed MS+ increased dry matter intake (% body weight), milk yield, 3.5% fat-corrected milk, and solids yield, and cows fed MON had greater milk urea nitrogen content in comparison with counterparts. Feeding MS+ increased the intake of feed particles with size between 8 and 19 mm and decreased the intake of particles shorter than 4 mm compared with other treatments. Rumination time (min/d) and chewing time (min/kg of neutral detergent fiber) were lower for cows fed MS+. Physiologic parameters (i.e., heart and respiratory rates, and body temperature) were not affected by the treatments. Overall, the use of monensin did not differ from control, and Milk Sacc+ improved performance of cows.
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Affiliation(s)
- Nathália T S Grigoletto
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Lucas G Ghizzi
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Larissa S Gheller
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Mauro S da S Dias
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Alanne T Nunes
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Tássia B P Silva
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | - Guilherme G da Silva
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900
| | | | | | - Francisco P Rennó
- Department of Animal Nutrition and Animal Production, University of São Paulo, Pirassununga, Brazil 13635-900; Bursar 1-B of the National Council of Scientific and Technological Development, Brasília, Brazil 71605-001.
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23
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Behavioural, physiological, neuro-endocrine and molecular responses of cattle against heat stress: an updated review. Trop Anim Health Prod 2021; 53:400. [PMID: 34255188 DOI: 10.1007/s11250-021-02790-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 05/30/2021] [Indexed: 10/20/2022]
Abstract
The negative impact of heat stress on cattle growth, development, reproduction and production has been quite alarming across the world. Climate change elevates earth surface temperature which exacerbates the wrath of heat stress on cattle. Moreover, cattle in tropical and sub-tropical countries are most commonly affected by the menace of heat stress which severely wane their production and productivity. In general, cattle exhibit various thermoregulatory responses such as behavioural, physiological, neuro-endocrine and molecular responses to counteract the terrible effects of heat stress. Amongst the aforementioned thermoregulatory responses, behavioural, physiological and neuro-endocrine responses are regarded as most conventional and expeditious responses shown by cattle against heat stress. Furthermore, molecular responses serve as the major adaptive response to attenuate the harmful effects of heat stress. Therefore, present review highlights the significance of behavioural, physiological, neuro-endocrine and molecular responses which act synergistically to combat the deleterious effects of heat stress thereby confer thermo-tolerance in cattle.
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24
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Pfeiffer J, Spykman O, Gandorfer M. Sensor and Video: Two Complementary Approaches for Evaluation of Dairy Cow Behavior after Calving Sensor Attachment. Animals (Basel) 2021; 11:1917. [PMID: 34203197 PMCID: PMC8300263 DOI: 10.3390/ani11071917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 11/30/2022] Open
Abstract
Studies evaluating calving sensors provided evidence that attaching the sensor to the tail may lead to changes in the cows' behavior. Two different calving sensors were attached to 18 cows, all of which were equipped with a rumen bolus to record their activity. Two methodological approaches were applied to detect potential behavioral changes: analysis of homogeneity of variance in cow activity (5 days pre-sensor and 24 h post-sensor) and analysis of video-recorded behavior (12 h pre- and post-sensor, respectively) in a subgroup. The average results across the sample showed no significant changes in the variability of activity and no statistically significant mean differences in most visually analyzed behaviors, namely walking, eating, drinking, social interaction, tail raising, rubbing the tail, and the number of standing and lying bouts after calving sensor attachment. In addition to considering mean values across all cows, individual cow investigations revealed an increased number of time slots showing a significant increase in the variability of activity and an increased frequency of tail raising and rubbing the tail on objects after calving sensor attachment in some cows, which should be investigated in more detail on a larger scale.
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Affiliation(s)
- Johanna Pfeiffer
- Bavarian State Research Center for Agriculture, Institute for Agricultural Engineering and Animal Husbandry, 94099 Ruhstorf an der Rott, Germany; (O.S.); (M.G.)
- TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Olivia Spykman
- Bavarian State Research Center for Agriculture, Institute for Agricultural Engineering and Animal Husbandry, 94099 Ruhstorf an der Rott, Germany; (O.S.); (M.G.)
- TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Markus Gandorfer
- Bavarian State Research Center for Agriculture, Institute for Agricultural Engineering and Animal Husbandry, 94099 Ruhstorf an der Rott, Germany; (O.S.); (M.G.)
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Gou X, Tsunekawa A, Tsubo M, Peng F, Sun J, Li Y, Zhao X, Lian J. Seasonal dynamics of cattle grazing behaviors on contrasting landforms of a fenced ranch in northern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 749:141613. [PMID: 32836130 DOI: 10.1016/j.scitotenv.2020.141613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 08/08/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
The number of livestock per unit area is commonly used as a proxy of grazing pressure in both experimental studies and grassland management. However, this practice ignores the impact of landform heterogeneity on the spatial distribution of grazing pressure, leading to localized patches of degraded grassland. The spatial distribution of actual grazing density thus needs to be examined. Owing to the corresponding changes in resource availability and energy consumption as livestock move across an elevation gradient, we predict that livestock will preferentially use low-land and that different temporal patterns of grazing pressure will occur in the contrasting landforms. GPS location data and a machine learning technique were used to identify the seasonal pattern and the factors driving grazing pressure on a fenced ranch. Over both low-land and sand-dune landforms, the proportion of time that livestock spent on foraging increased from 63% in July to 67% in August and 69% in September, and non-foraging behavior decreased correspondingly. In low-land, the log-transformed average foraging density significantly increased from 0.61 (i.e., total foraging behaviors in 5 days measured at 50-s intervals per 10 × 10 m grid) in July to 0.66 in August and 0.88 in September, whereas there was no significant change on sand-dunes. From July to September, the relative area of low-land foraged by cattle accounted for 31%, 35%, and 36%, respectively, and in sand-dunes the proportions increased from 45% to 47% to 51%. In low-land, the foraging density was negatively correlated with biomass (P = .07), total digestible nutrients (P < .05), and crude protein (P = .06) and positively correlated with acid detergent fiber (P < .05), whereas no such relationships were observed in sand-dunes. Our results indicate that topographic features should be considered when managing livestock, especially during periods with adverse conditions of herbage quality and quantity.
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Affiliation(s)
- Xiaowei Gou
- The United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan.
| | - Atsushi Tsunekawa
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan.
| | - Mitsuru Tsubo
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan.
| | - Fei Peng
- International Platform for Dryland Research and Education, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 73000, China.
| | - Jian Sun
- Synthesis Research Centre of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), 11A, Datun Road, Chaoyang District, Beijing 100101, China.
| | - Yulin Li
- Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China.
| | - Xueyong Zhao
- Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China.
| | - Jie Lian
- Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China.
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Hou Y, Zhang L, Dong RY, Liang MY, Lu Y, Sun XQ, Zhao X. Comparing responses of dairy cows to short-term and long-term heat stress in climate-controlled chambers. J Dairy Sci 2020; 104:2346-2356. [PMID: 33272576 DOI: 10.3168/jds.2020-18946] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 09/10/2020] [Indexed: 11/19/2022]
Abstract
Heat stress (HS) in dairy cows can be classified into short-term heat stress (STHS) and long-term heat stress (LTHS) according to the number of consecutive days in HS. The comparative study of these 2 types of HS is limited in terms of their effects on the production and energy metabolism of cows. In this study, 4 lactating Holstein cows (102.5 ± 12 days in milk, 605 ± 22 kg of body weight, second parity) fitted with rumen fistulae were randomly assigned to 1 of 2 groups in a 2 × 2 crossover design and allocated to 1 of 2 climate-controlled chambers. This study contained 2 periods, each with a control phase and a HS phase. There was a recovery phase between 2 periods. The HS phase comprised either STHS (3 d) or LTHS (7 d) treatments. Data collected from the 3 d of STHS and the last 3 d of LTHS were compared. The chambers were set at thermal neutral conditions (20°C, 50% humidity) during the control and recovery phases or cyclical HS conditions (26-38°C, 50% humidity) during the HS phase. Compared with STHS, LTHS decreased milk yield by 17.2% and dry matter intake by 12.6%, indicating that LTHS caused a more severe decline in milk production and feed intake. In addition, LTHS decreased milk protein concentration by 6.8% and milk protein yield by 22.4%. In comparison with STHS, LTHS decreased rumen liquor volatile fatty acid (29.7%), blood glucose (11.6%), and nonesterified fatty acid (13.6%) concentrations, but increased milk urea nitrogen by 15.1%, blood urea nitrogen by 8.6%, and creatine concentrations by 15.4%. Our results suggest that although reduced feed intake may be mainly responsible for reduced milk production during STHS, impaired rumen metabolism and suppressed mobilization of adipose tissue could be the main reasons for further reduction in milk yield during LTHS.
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Affiliation(s)
- Y Hou
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - L Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - R Y Dong
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - M Y Liang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - Y Lu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - X Q Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - X Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100; Department of Animal Science, McGill University, Quebec, Canada H9X 3V9.
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Succu S, Sale S, Ghirello G, Ireland JJ, Evans ACO, Atzori AS, Mossa F. Exposure of dairy cows to high environmental temperatures and their lactation status impairs establishment of the ovarian reserve in their offspring. J Dairy Sci 2020; 103:11957-11969. [PMID: 33041040 DOI: 10.3168/jds.2020-18678] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 07/23/2020] [Indexed: 12/26/2022]
Abstract
The objectives of this study were to establish if exposure of pregnant dairy cows to high environmental temperatures and humidity during the first trimester of pregnancy impairs the establishment of the ovarian reserve (total number of healthy follicles and oocytes in ovaries) and fertility in their offspring. Serum anti-Müllerian hormone (AMH) concentrations and number of follicles ≥3 mm (antral follicle count; AFC) were assessed on a random day of the estrous cycle in 310 sixteen-month-old dairy heifers. Based on season of their conception and early fetal life, heifers were separated into 2 groups: summer (mean monthly temperature-humidity index = 69.33 ± 2.6) and winter (temperature-humidity index = 54.91 ± 1.08). The AMH and AFC were lower in summer (419.27 ± 22.81 pg/mL and 9.32 ± 0.42 follicles, respectively) compared with winter heifers (634.91 ± 47.60 pg/mL and 11.84 ± 0.46 follicles, respectively) and were not influenced by farm and age at sampling. Heifers born to dams that were not being milked during gestation had lower AMH and AFC compared with offspring of cows on their first lactation, whereas no difference was detected between offspring of cows on their first and subsequent lactations. Summer and winter heifers had similar age at first service and at first calving, and similar number of services per conception. Regardless of season in early fetal life, heifers were classified into 3 groups based on AMH and AFC (low = 20%, intermediate = 60%, high = 20%). Heifers with the lowest AMH were older at first service compared with herd mates with intermediate AMH, but age at first calving and number of services per conception were similar among AMH categories. No difference was detected in any of the fertility measures among AFC categories. Heifers born to mothers exposed to high environmental temperatures in early gestation had smaller ovarian reserves compared with herd mates conceived in winter, but no association between season of early fetal life and fertility at first conception was established. Season of conception and maternal lactation status affect the size of the ovarian reserve, but not fertility, at first conception in the progeny.
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Affiliation(s)
- S Succu
- Department of Veterinary Medicine, University of Sassari, via Vienna 2, 07100, Sassari, Italy
| | - S Sale
- Embryosardegna, 08022 Dorgali (NU), Italy
| | - G Ghirello
- Department of Veterinary Medicine, University of Sassari, via Vienna 2, 07100, Sassari, Italy
| | - J J Ireland
- Molecular Reproductive Endocrinology Laboratory, Department of Animal Science, Michigan State University, East Lansing 48824-1225
| | - A C O Evans
- School of Agriculture and Food Science, College of Health and Agricultural Sciences, University College Dublin, Dublin 4, Ireland
| | - A S Atzori
- Department of Agriculture, University of Sassari, viale Italia 39, 07100, Sassari, Italy
| | - F Mossa
- Department of Veterinary Medicine, University of Sassari, via Vienna 2, 07100, Sassari, Italy.
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Halli K, Brügemann K, Bohlouli M, König S. Time-lagged and acute impact of heat stress on production and fertility traits in the local dual-purpose cattle breed "Rotes Höhenvieh" under pasture-based conditions. Transl Anim Sci 2020; 4:txaa148. [PMID: 33033792 PMCID: PMC7528550 DOI: 10.1093/tas/txaa148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/30/2020] [Indexed: 12/21/2022] Open
Abstract
Climate change causes rising temperatures and extreme weather events worldwide, with possible detrimental time-lagged and acute impact on production and functional traits of cattle kept in outdoor production systems. The aim of the present study was to infer the influence of mean daily temperature humidity index (mTHI) and number of heat stress days (nHS) from different recording periods on birth weight (BWT), 200 d- and 365 d-weight gain (200 dg, 365 dg) of calves, and on the probability of stillbirth (SB), and calving interval (CINT) of their dams. Data recording included 4,362 observations for BWT, 3,136 observations for 200 dg, 2,502 observations for 365 dg, 9,293 observations for the birth status, and 2,811 observations for CINT of the local dual-purpose cattle breed "Rotes Höhenvieh" (RHV). Trait responses on mTHI and nHS were studied via generalized linear mixed model applications with identity link functions for Gaussian traits (BWT, 200 dg, 365 dg, CINT) and logit link functions for binary SB. High mTHI and high nHS before autumn births had strongest detrimental impact on BWT across all antepartum- (a.p.) periods (34.4 ± 0.79 kg maximum). Prolonged CINT was observed when cows suffered heat stress (HS) before or after spring calvings, with maximum length of 391.6 ± 3.82 d (56 d a.p.-period). High mTHI and high nHS during the 42 d- and 56 d a.p.-period implied increased probabilities for SB. We found a significant (P < 0.05) seasonal effect on SB in model 3 across all a.p.-periods, with the highest probability in autumn (maximum of 5.4 ± 0.82% in the 7 d a.p.-period). Weight gains of calves (200 dg and 365 dg) showed strongest HS response for mTHI and nHS measurements from the long-term postnatal periods (42 d- and 56 d-periods), with minimum 200 dg of 194.2 ± 4.15 kg (nHS of 31 to 42 d in the 42 d-period) or minimum 365 dg of 323.8 ± 3.82 kg (mTHI ≥ 60 in the 42 d-period). Calves born in summer, combined with high mTHI or high nHS pre- or postnatal, had lower weight gains, compared with calves born in other calving seasons or under cooler conditions. Highest BWT, weight gains, and shortest CINT mostly were detected under cool to moderate climate conditions for mTHI, and small to moderate nHS. Results indicate acute and time-lagged HS effects and address possible HS-induced epigenetic modifications of the bovine genome across generations and limited acclimatization processes to heat, especially when heat occurs during the cooler spring and autumn months.
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Affiliation(s)
- Kathrin Halli
- Institute of Animal Breeding and Genetics, Group Animal Breeding, Justus-Liebig-University, Giessen, Germany
| | - Kerstin Brügemann
- Institute of Animal Breeding and Genetics, Group Animal Breeding, Justus-Liebig-University, Giessen, Germany
| | - Mehdi Bohlouli
- Institute of Animal Breeding and Genetics, Group Animal Breeding, Justus-Liebig-University, Giessen, Germany
| | - Sven König
- Institute of Animal Breeding and Genetics, Group Animal Breeding, Justus-Liebig-University, Giessen, Germany
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Becker CA, Collier RJ, Stone AE. Invited review: Physiological and behavioral effects of heat stress in dairy cows. J Dairy Sci 2020; 103:6751-6770. [PMID: 32448584 DOI: 10.3168/jds.2019-17929] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 03/15/2020] [Indexed: 11/19/2022]
Abstract
Animal welfare can be negatively affected when dairy cattle experience heat stress. Managing heat stress has become more of a challenge than ever before, due to the increasing number of production animals with increased milk yield, and therefore greater metabolic activity. Environmental temperatures have increased by 1.0°C since the 1800s and are expected to continue to increase by another 1.5°C between 2030 and 2052. Heat stress affects production, reproduction, nutrition, health, and welfare. Means exist to monitor and evaluate heat stress in dairy cattle, as well as different ways to abate heat, all with varying levels of effectiveness. This paper is a summary and compilation of information on dairy cattle heat stress over the years.
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Affiliation(s)
- C A Becker
- Department of Animal and Dairy Science, Mississippi State University, Starkville, 39762
| | - R J Collier
- Department of Animal and Veterinary Science, University of Idaho, Moscow 83844
| | - A E Stone
- Department of Animal and Dairy Science, Mississippi State University, Starkville, 39762.
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Zhang L, Gengler N, Dehareng F, Colinet F, Froidmont E, Soyeurt H. Can We Observe Expected Behaviors at Large and Individual Scales for Feed Efficiency-Related Traits Predicted Partly from Milk Mid-Infrared Spectra? Animals (Basel) 2020; 10:E873. [PMID: 32443421 PMCID: PMC7278466 DOI: 10.3390/ani10050873] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 11/24/2022] Open
Abstract
Phenotypes related to feed efficiency were predicted from records easily acquired by breeding organizations. A total of 461,036 and 354,148 records were collected from the first and second parity Holstein cows. Equations were applied to the milk mid-infrared spectra to predict the main milk components and coupled with animal characteristics to predict the body weight (pBW). Dry matter intake (pDMI) was predicted from pBW using the National Research Council (NRC) equation. The consumption index (pIC) was estimated from pDMI and fat, and protein corrected milk. All traits were modeled using single trait test-day models. Descriptive statistics were within the expected range. Milk yield, pDMI, and pBW were phenotypically positively related (r ranged from 0.08 to 0.64). As expected, pIC was phenotypically negatively correlated with milk yield (-0.77 and -0.80 for the first and second lactation) and slightly positively correlated with pBW (0.16 and 0.07 for the first and second lactation). Later, parity cows seemed to have a better feed efficiency as they had a lower pIC. Although the prediction accuracy was moderate, the observed behaviors of studied traits by year, stage of lactation, and parity were in agreement with the literature. Moreover, as a genetic component was highlighted (heritability around 0.18), it would be interesting to realize a genetic evaluation of these traits and compare the obtained breeding values with the ones estimated for sires having daughters with reference feed efficiency records.
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Affiliation(s)
- Lei Zhang
- TERRA Research Centre, University of Liège-Gembloux Agro-Bio Tech, 5030 Gembloux, Belgium; (N.G.); (F.C.); (H.S.)
| | - Nicolas Gengler
- TERRA Research Centre, University of Liège-Gembloux Agro-Bio Tech, 5030 Gembloux, Belgium; (N.G.); (F.C.); (H.S.)
| | - Frédéric Dehareng
- Valorisation of Agricultural Products Department, Walloon Agricultural Research Centre, 5030 Gembloux, Belgium; (F.D.); (E.F.)
| | - Frédéric Colinet
- TERRA Research Centre, University of Liège-Gembloux Agro-Bio Tech, 5030 Gembloux, Belgium; (N.G.); (F.C.); (H.S.)
| | - Eric Froidmont
- Valorisation of Agricultural Products Department, Walloon Agricultural Research Centre, 5030 Gembloux, Belgium; (F.D.); (E.F.)
| | - Hélène Soyeurt
- TERRA Research Centre, University of Liège-Gembloux Agro-Bio Tech, 5030 Gembloux, Belgium; (N.G.); (F.C.); (H.S.)
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Abstract
The so-called global change refers to changes on a planetary scale. The term encompasses various issues like resource use, energy development, population growth, land use and land cover, carbon and nitrogen cycle, pollution and health, and climate change. The paper deals with challenges for dairy cattle production systems in Europe arising from climate change as one part of global changes. Global warming is increasing, and therefore ecosystems, plant and animal biodiversity, and food security and safety are at risk. It is already accepted knowledge that the direct and indirect effects of global warming in combination with an increasing frequency of weather extremes are a serious issue for livestock production, even in moderate climate zones like Central Europe. The potential and already-measurable effects of climate change (including increase in temperature, frequency of hot days and heat waves), in particular the challenges on grassland production, fodder quality, nutrition in general, cow welfare, health as well as performance of dairy production, will be reviewed. Indirect and direct effects on animals are correlated with their performance. There are clear indications that with selection for high-yielding animals the sensitivity to climate changes increases. Cumulative effects (e.g. higher temperature plus increased pathogen and their vectors loads) do strengthen these impacts. To cope with the consequences several possible adaptation and mitigation strategies must be established on different levels. This includes changes in the production systems (e.g. management, barn, feeding), breeding strategies and health management.
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McDonald PV, von Keyserlingk MAG, Weary DM. Hot weather increases competition between dairy cows at the drinker. J Dairy Sci 2020; 103:3447-3458. [PMID: 32008780 DOI: 10.3168/jds.2019-17456] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/18/2019] [Indexed: 11/19/2022]
Abstract
Heat-stressed dairy cows on pasture will compete for resources that aid cooling, but it is not known how heat stress affects the competition for water by indoor-housed cows. The aim of this observational study was to evaluate how heat stress affects the behavior of indoor-housed cows at the drinker at both group and cow levels. For 3 wk after calving, cows were housed in a dynamic group of 20 animals in a pen with 12 electronic feed bins, 2 electronic water bins, and 24 freestalls. A total of 69 lactating Holstein dairy cows were enrolled over the 59-d study. The electronic water bins recorded time spent at the drinker, frequency of visits, water intake, and competitive events for 24 h/d. Competitive events were quantified using the number of replacements (recorded when there was a ≤29-s interval between 2 cows sequentially visiting the same drinker). The number of replacements a cow was involved in was used to determine her level of competitive success at the drinker (low, medium, high). The temperature-humidity index (THI) was recorded by the local weather station, and moving averages for daily maximum THI over a 3-d period were calculated. For the analysis of time spent at the drinker, frequency of visits, and water intake, the measures from all cows were averaged to create 1 observation per day, and the number of replacements at the drinker was summed. A linear regression was performed to determine the relationship between THI and group-level drinking behavior. At the cow level, a repeated measures mixed model, with fixed effects of level of competitive success, milk yield, and 3-d maximum THI and a first-order autoregressive covariance structure, was used to determine how increasing THI affects the drinking behavior of individual cows based on their level of competitive success. Feed intake was included as a fixed effect in the water intake model. We found that, with increasing THI, cows drank more water, spent more time at the drinker, made more visits to the drinker, and engaged in more competitive events at the drinker. In exploratory analysis, we found that cows with low competitive success at the drinker shifted their drinking behavior to avoid the drinker at the hottest and most competitive time of day. These results indicate that behavior can be used to indicate when cows feel hot. These measures may be of practical value in deciding when to provide cooling, especially for farms where attendance at the drinker can be monitored electronically.
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Affiliation(s)
- Paige V McDonald
- Animal Welfare Program, University of British Columbia, 2357 Mall, Vancouver, BC, Canada, V6T 1Z4
| | | | - Daniel M Weary
- Animal Welfare Program, University of British Columbia, 2357 Mall, Vancouver, BC, Canada, V6T 1Z4.
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Influence of Barn Climate, Body Postures and Milk Yield on the Respiration Rate of Dairy Cows. ANNALS OF ANIMAL SCIENCE 2019. [DOI: 10.2478/aoas-2019-0006] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The main objective of this study was to identify the influences of different climatic conditions and cow-related factors on the respiration rate (RR) of lactating dairy cows. Measurements were performed on 84 lactating Holstein Friesian dairy cows (first to eighth lactation) in Brandenburg, Germany. The RR was measured hourly or twice a day with up to three randomly chosen measurement days per week between 0700 h and 1500 h (GMT + 0100 h) by counting right thoraco-abdominal movements of the cows. Simultaneously with RR measurements, cow body postures (standing vs. lying) were documented. Cows’ milk yield and days in milk were recorded daily. The ambient temperature and relative humidity of the barn were recorded every 5 min to calculate the current temperature-humidity index (THI). The data were analyzed for interactions between THI and cow-related factors (body postures and daily milk yield) on RR using a repeated measurement linear mixed model. There was a significant effect of the interaction between current THI category and body postures on RR. The RRs of cows in lying posture in the THI < 68, 68 ≤ THI < 72 and 72 ≤ THI < 80 categories (37, 46 and 53 breaths per minute (bpm), respectively) were greater than those of standing cows in the same THI categories (30, 38 and 45 bpm, respectively). For each additional kilogram of milk produced daily, an increase of 0.23±0.19 bpm in RR was observed. Including cow-related factors may help to prevent uncertainties of RR in heat stress predictions. In practical application, these factors should be included when predicting RR to evaluate heat stress on dairy farms.
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35
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Effects of acute and chronic heat stress on feed sorting behaviour of lactating dairy cows. Animal 2019; 13:2044-2051. [DOI: 10.1017/s1751731118003762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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36
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Foust AM, Headlee WL. Modeling shade tree use by beef cattle as a function of black globe temperature and time of day. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2017; 61:2217-2227. [PMID: 28831557 DOI: 10.1007/s00484-017-1429-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 08/02/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Increasing temperatures associated with global climate change threaten to disrupt agricultural systems such as beef production, yet relatively little is known about the use of natural tree shade to mitigate the negative effects of heat stress on beef cattle. In this study, we evaluated how temperature and time of day influenced the utilization of tree shade in relation to coloration, orientation, and behavior of beef cattle in a pasture system. Temperatures in shade and direct sunlight were measured using black globe temperature (BGT) data loggers. Time-lapse images from game cameras were used to obtain counts of shade usage, coloration, orientation, and behavior of cattle throughout the daytime hours. In general, we found that shade utilization and most of the predominating orientations and behaviors differed significantly (P < 0.05) by both time of day (Hour) and BGT in direct sunlight (BGTsun), while interactions between these two effects (Hour × BGTsun) were often nonsignificant. The mean percentage of the herd using shade was highest in mid-morning (87-96%) and early afternoon (97%), but also increased with BGTsun regardless of the time of day; these trends were similar for both dark- and light-colored cattle. Lying down was the dominant behavior exhibited in the shade, while foraging was the most prevalent behavior in the sun. When herd shade usage was lowest in mid- to late-afternoon (<1%) we also observed an increase in the use of heat-mitigating orientations in the sun (37-47%). We discuss some practical implications of these results, including the potential use of temperature thresholds to interpret cattle behaviors and shade usage.
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Affiliation(s)
- Amanda M Foust
- School of Forestry and Natural Resources, University of Arkansas at Monticello, Monticello, AR, 71656, USA.
- Arkansas Forest Resources Center, University of Arkansas System Division of Agriculture, Monticello, AR, 71656, USA.
| | - William L Headlee
- School of Forestry and Natural Resources, University of Arkansas at Monticello, Monticello, AR, 71656, USA
- Arkansas Forest Resources Center, University of Arkansas System Division of Agriculture, Monticello, AR, 71656, USA
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37
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Collier R, Renquist B, Xiao Y. A 100-Year Review: Stress physiology including heat stress. J Dairy Sci 2017; 100:10367-10380. [DOI: 10.3168/jds.2017-13676] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 08/22/2017] [Indexed: 12/13/2022]
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38
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Beale PK, Marsh KJ, Foley WJ, Moore BD. A hot lunch for herbivores: physiological effects of elevated temperatures on mammalian feeding ecology. Biol Rev Camb Philos Soc 2017; 93:674-692. [DOI: 10.1111/brv.12364] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/25/2017] [Accepted: 08/09/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Phillipa K. Beale
- Research School of Biology The Australian National University Canberra Australian Capital Territory 2601 Australia
| | - Karen J. Marsh
- Research School of Biology The Australian National University Canberra Australian Capital Territory 2601 Australia
| | - William J. Foley
- Research School of Biology The Australian National University Canberra Australian Capital Territory 2601 Australia
- Animal Ecology and Conservation University of Hamburg, Martin‐Luther‐King‐Platz 3 20146 Hamburg Germany
| | - Ben D. Moore
- Hawkesbury Institute for the Environment Western Sydney University, Locked bag 1797 Penrith New South Wales 2751 Australia
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Min L, Zhao S, Tian H, Zhou X, Zhang Y, Li S, Yang H, Zheng N, Wang J. Metabolic responses and "omics" technologies for elucidating the effects of heat stress in dairy cows. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2017; 61:1149-1158. [PMID: 27904969 PMCID: PMC5486771 DOI: 10.1007/s00484-016-1283-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
Heat stress (HS) negatively affects various industries that rely on animal husbandry, particularly the dairy industry. A better understanding of metabolic responses in HS dairy cows is necessary to elucidate the physiological mechanisms of HS and offer a new perspective for future research. In this paper, we review the current knowledge of responses of body metabolism (lipid, carbohydrate, and protein), endocrine profiles, and bovine mammary epithelial cells during HS. Furthermore, we summarize the metabolomics and proteomics data that have revealed the metabolite profiles and differentially expressed proteins that are a feature of HS in dairy cows. Analysis of metabolic changes and "omics" data demonstrated that HS is characterized by reduced lipolysis, increased glycolysis, and catabolism of amino acids in dairy cows. Here, analysis of the impairment of immune function during HS and of the inflammation that arises after long-term HS might suggest new strategies to ameliorate the effects of HS in dairy production.
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Affiliation(s)
- Li Min
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Shengguo Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - He Tian
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Xu Zhou
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Yangdong Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Songli Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Hongjian Yang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Nan Zheng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Jiaqi Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
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Fournel S, Ouellet V, Charbonneau É. Practices for Alleviating Heat Stress of Dairy Cows in Humid Continental Climates: A Literature Review. Animals (Basel) 2017; 7:ani7050037. [PMID: 28468329 PMCID: PMC5447919 DOI: 10.3390/ani7050037] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/24/2017] [Accepted: 04/29/2017] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The severity of heat stress issues on dairy cows will increase as global warming progresses. Fortunately, major advances in environmental management, including fans, misters, sprinklers, and cooled waterbeds, can attenuate the effects of thermal stress on cow health, production, and reproduction. These cooling systems were, however, tested in subtropical areas and their efficiency in northern regions is uncertain. This article assesses the potential of existing technologies to cool cows in humid continental climates through calculation of heat stress indices. Abstract Heat stress negatively affects the health and performance of dairy cows, resulting in considerable economic losses for the industry. In future years, climate change will exacerbate these losses by making the climate warmer. Physical modification of the environment is considered to be the primary means of reducing adverse effects of hot weather conditions. At present, to reduce stressful heat exposure and to cool cows, dairy farms rely on shade screens and various forms of forced convection and evaporative cooling that may include fans and misters, feed-line sprinklers, and tunnel- or cross-ventilated buildings. However, these systems have been mainly tested in subtropical areas and thus their efficiency in humid continental climates, such as in the province of Québec, Canada, is unclear. Therefore, this study reviewed the available cooling applications and assessed their potential for northern regions. Thermal stress indices such as the temperature-humidity index (THI) were used to evaluate the different cooling strategies.
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Affiliation(s)
- Sébastien Fournel
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec City, QC G1V 0A6, Canada.
| | - Véronique Ouellet
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec City, QC G1V 0A6, Canada.
| | - Édith Charbonneau
- Département des sciences animales, Université Laval, 2425 rue de l'Agriculture, Québec City, QC G1V 0A6, Canada.
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Abeni F, Galli A. Monitoring cow activity and rumination time for an early detection of heat stress in dairy cow. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2017; 61:417-425. [PMID: 27498881 DOI: 10.1007/s00484-016-1222-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
The aim of this study was to explore the use of cow activity and rumination time by precision livestock farming tools as early alert for heat stress (HS) detection. A total of 58 Italian Friesian cows were involved in this study during summer 2015. Based on the temperature humidity index (THI), two different conditions were compared on 16 primiparous and 11 multiparous, to be representative of three lactation phases: early (15-84 DIM), around peak (85-154 DIM), and plateau (155-224 DIM). A separate dataset for the assessment of the variance partition included all the cows in the herd from June 7 to July 16. The rumination time (RT2h, min/2 h) and activity index (AI2h, bouts/2 h) were summarized every 2-h interval. The raw data were used to calculate the following variables: total daily RT (RTt), daytime RT (RTd), nighttime RT (RTn), total daily AI (AIt), daytime AI (AId), and nighttime AI (AIn). Either AIt and AId increased, whereas RTt, RTd, and RTn decreased with higher THI in all the three phases. The highest decrease was recorded for RTd and ranged from 49 % (early) to 45 % (plateau). The contribution of the cow within lactation phase was above 60 % of the total variance for AI traits and a share from 33.9 % (for RTt) to 54.8 % (RTn) for RT traits. These observations must be extended to different feeding managements and different animal genetics to assess if different thresholds could be identified to set an early alert system for the farmer.
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Affiliation(s)
- Fabio Abeni
- Centro di ricerca per le produzioni foraggere e lattiero-casearie (CREA-FLC), Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, via Antonio Lombardo 11, 26900, Lodi, Italy.
| | - Andrea Galli
- Centro di ricerca per le produzioni foraggere e lattiero-casearie (CREA-FLC), Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, via Antonio Lombardo 11, 26900, Lodi, Italy
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42
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Hill DL, Wall E. Weather influences feed intake and feed efficiency in a temperate climate. J Dairy Sci 2017; 100:2240-2257. [PMID: 28109597 DOI: 10.3168/jds.2016-11047] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 08/21/2016] [Indexed: 11/19/2022]
Abstract
A key goal for livestock science is to ensure that food production meets the needs of an increasing global population. Climate change may heighten this challenge through increases in mean temperatures and in the intensity, duration, and spatial distribution of extreme weather events, such as heat waves. Under high ambient temperatures, livestock are expected to decrease dry matter intake (DMI) to reduce their metabolic heat production. High yielding dairy cows require high DMI to support their levels of milk production, but this may increase susceptibility to heat stress. Here, we tested how feed intake and the rate of converting dry matter to milk (feed efficiency, FE) vary in response to natural fluctuations in weather conditions in a housed experimental herd of lactating Holstein Friesians in the United Kingdom. Cows belonged to 2 lines: those selected for high genetic merit for milk traits (select) and those at the UK average (control). We predicted that (1) feed intake and FE would vary with an index of temperature and humidity (THI), wind speed, and the number of hours of sunshine, and that (2) the effects of (1) would depend on the cows' genetic merit. Animals received a mixed ration, available ad libitum, from automatic feed measurement gates. Using >73,000 daily feed intake and FE records from 328 cows over 8 yr, we found that select cows produced more fat- and protein-corrected milk, and had higher DMI and FE than controls. Cows of both lines decreased DMI and fat- and protein-corrected milk but, importantly, increased FE as THI increased. This suggests that improvements in the efficiency of converting feed to milk may partially offset the costs of reduced milk yield owing to a warmer climate, at least under conditions of mild heat stress. The rate of increase in FE with THI was steeper in select cows than in controls, which raises the possibility that select cows use more effective coping tactics. This is, to our knowledge, the first longitudinal study on the effects of weather on FE. Understanding how weather influences feed intake and efficiency can help us to develop management and selection practices that optimize productivity under unfavorable weather conditions. This will be an important aspect of climate resilience in future.
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Affiliation(s)
- Davina L Hill
- Animal and Veterinary Sciences Research Group, Scotland's Rural College, King's Buildings, West Mains Road, Edinburgh, EH9 3JG, UK.
| | - Eileen Wall
- Animal and Veterinary Sciences Research Group, Scotland's Rural College, King's Buildings, West Mains Road, Edinburgh, EH9 3JG, UK; ClimateXChange, High School Yards, Edinburgh, EH1 1LZ, United Kingdom
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43
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Jugular-infused methionine, lysine and branched-chain amino acids does not improve milk production in Holstein cows experiencing heat stress. Animal 2017; 11:2220-2228. [DOI: 10.1017/s1751731117001057] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Garner JB, Douglas M, Williams SRO, Wales WJ, Marett LC, DiGiacomo K, Leury BJ, Hayes BJ. Responses of dairy cows to short-term heat stress in controlled-climate chambers. ANIMAL PRODUCTION SCIENCE 2017. [DOI: 10.1071/an16472] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The objective of the present research was to describe the physiological and production responses of lactating dairy cows during and after sudden exposure to temperate-climate heat-wave conditions, compared with cows in thermoneutral conditions. Twelve lactating multiparous Holstein–Friesian dairy cows were housed in controlled-climate chambers for 4 days. Six were exposed to a short-term temperature and humidity challenge (THc, diurnal temperature and humidity fluctuations inducing moderate heat stress; temperature humidity index 74–84) and six cows were exposed to thermoneutral conditions (THn, temperatur humidity index 55–61). Cows were also measured during a 7-day pre-experimental and 14-day post-experimental period. Physiological indicators of heat stress were measured, including rectal and vaginal temperature and respiration rate, which indicated that the THc in controlled-climate chambers induced moderate heat stress. The cows exposed to the 4-day THc reduced their milk yield by 53% and their dry-matter intake by 48%, compared with the cows in the THn treatment. Milk yield of THc cows returned to pre-experimental milk yield by Day 7 and dry-matter intake by Day 4 of the post-experimental period. The short-term heat challenge induced metabolic adaptations by mobilising adipose tissue, as indicated by increased non-esterified fatty acids, and amino acids from skeletal muscle, as indicated by increased urea nitrogen to compensate for reduced nutrient intake and increased energy expenditure. Endocrine responses included greater prolactin concentrations, which is associated with thermoregulation and water metabolism. The cows exposed to THc displayed production and physical responses that facilitated lower metabolic heat production and greater heat dissipation in an attempt to maintain homeostasis during the short-term heat exposure. These results indicated that the conditions imposed on the cows in the controlled-climate chambers were sufficient to induce heat-stress responses and adversely affected production in the lactating dairy cow, and the delay between the return to normal feed intake and milk yield following the heat challenge suggests a period of metabolic recovery was occurring.
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Pragna P, Archana P, Aleena J, Sejian V, Krishnan G, Bagath M, Manimaran A, Beena V, Kurien E, Varma G, Bhatta R. Heat Stress and Dairy Cow: Impact on Both Milk Yield and
Composition. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/ijds.2017.1.11] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Davison TM, Jonsson NN, Mayer DG, Gaughan JB, Ehrlich WK, McGowan MR. Comparison of the impact of six heat-load management strategies on thermal responses and milk production of feed-pad and pasture fed dairy cows in a subtropical environment. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2016; 60:1961-1968. [PMID: 27174414 DOI: 10.1007/s00484-016-1183-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 04/28/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
Exposure to hot environments affects milk yield (MY) and milk composition of pasture and feed-pad fed dairy cows in subtropical regions. This study was undertaken during summer to compare MY and physiology of cows exposed to six heat-load management treatments. Seventy-eight Holstein-Friesian cows were blocked by season of calving, parity, milk yield, BW, and milk protein (%) and milk fat (%) measured in 2 weeks prior to the start of the study. Within blocks, cows were randomly allocated to one of the following treatments: open-sided iron roofed day pen adjacent to dairy (CID) + sprinklers (SP); CID only; non-shaded pen adjacent to dairy + SP (NSD + SP); open-sided shade cloth roofed day pen adjacent to dairy (SCD); NSD + sprinkler (sprinkler on for 45 min at 1100 h if mean respiration rate >80 breaths per minute (NSD + WSP)); open-sided shade cloth roofed structure over feed bunk in paddock + 1 km walk to and from the dairy (SCP + WLK). Sprinklers for CID + SP and NSD + SP cycled 2 min on, 12 min off when ambient temperature >26°C. The highest milk yields were in the CID + SP and CID treatments (23.9 L cow-1 day-1), intermediate for NSD + SP, SCD and SCP + WLK (22.4 L cow-1 day-1), and lowest for NSD + WSP (21.3 L cow-1 day-1) (P < 0.05). The highest (P < 0.05) feed intakes occurred in the CID + SP and CID treatments while intake was lowest (P < 0.05) for NSD + WSP and SCP + WLK. Weather data were collected on site at 10-min intervals, and from these, THI was calculated. Nonlinear regression modelling of MY × THI and heat-load management treatment demonstrated that cows in CID + SP showed no decline in MY out to a THI break point value of 83.2, whereas the pooled MY of the other treatments declined when THI >80.7. A combination of iron roof shade plus water sprinkling throughout the day provided the most effective control of heat load.
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Affiliation(s)
- T M Davison
- Meat and Livestock Australia, Sydney, Australia
| | - N N Jonsson
- Scottish Centre for Production Animal Health and Food Safety, Glasgow, UK
| | - D G Mayer
- Department of Agriculture and Fisheries, Brisbane, QLD, Australia
| | - J B Gaughan
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, Australia.
| | - W K Ehrlich
- Department of Agriculture and Fisheries, Brisbane, QLD, Australia
| | - M R McGowan
- School of Veterinary Science, The University of Queensland, Gatton, Australia
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47
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Garner JB, Douglas ML, Williams SRO, Wales WJ, Marett LC, Nguyen TTT, Reich CM, Hayes BJ. Genomic Selection Improves Heat Tolerance in Dairy Cattle. Sci Rep 2016; 6:34114. [PMID: 27682591 PMCID: PMC5040955 DOI: 10.1038/srep34114] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 09/07/2016] [Indexed: 11/09/2022] Open
Abstract
Dairy products are a key source of valuable proteins and fats for many millions of people worldwide. Dairy cattle are highly susceptible to heat-stress induced decline in milk production, and as the frequency and duration of heat-stress events increases, the long term security of nutrition from dairy products is threatened. Identification of dairy cattle more tolerant of heat stress conditions would be an important progression towards breeding better adapted dairy herds to future climates. Breeding for heat tolerance could be accelerated with genomic selection, using genome wide DNA markers that predict tolerance to heat stress. Here we demonstrate the value of genomic predictions for heat tolerance in cohorts of Holstein cows predicted to be heat tolerant and heat susceptible using controlled-climate chambers simulating a moderate heatwave event. Not only was the heat challenge stimulated decline in milk production less in cows genomically predicted to be heat-tolerant, physiological indicators such as rectal and intra-vaginal temperatures had reduced increases over the 4 day heat challenge. This demonstrates that genomic selection for heat tolerance in dairy cattle is a step towards securing a valuable source of nutrition and improving animal welfare facing a future with predicted increases in heat stress events.
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Affiliation(s)
- J B Garner
- Agriculture Victoria, Department of Economic Development, Jobs, Transport and Resources, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - M L Douglas
- Agriculture Victoria, Department of Economic Development, Jobs, Transport and Resources, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - S R O Williams
- Agriculture Victoria, Department of Economic Development, Jobs, Transport and Resources, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - W J Wales
- Agriculture Victoria, Department of Economic Development, Jobs, Transport and Resources, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - L C Marett
- Agriculture Victoria, Department of Economic Development, Jobs, Transport and Resources, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - T T T Nguyen
- BioSciences Research, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - C M Reich
- BioSciences Research, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - B J Hayes
- BioSciences Research, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, Victoria 3083, Australia.,Queensland Alliance for Agriculture and Food Innovation, Centre for Animal Science, University of Queensland, Queensland, Australia
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48
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Aarif O, Aggarwal A. Dry period cooling ameliorates physiological variables and blood acid base balance, improving milk production in murrah buffaloes. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2016; 60:465-473. [PMID: 26232368 DOI: 10.1007/s00484-015-1044-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 06/29/2015] [Accepted: 07/21/2015] [Indexed: 06/04/2023]
Abstract
This study aimed to evaluate the impact of evaporative cooling during late gestation on physiological responses, blood gas and acid base balance and subsequent milk production of Murrah buffaloes. To investigate this study sixteen healthy pregnant dry Murrah buffaloes (second to fourth parity) at sixty days prepartum were selected in the months of May to June and divided into two groups of eight animals each. One group of buffaloes (Cooled/CL) was managed under fan and mist cooling system during dry period. Group second buffaloes (Noncooled/NCL) remained as control without provision of cooling during dry period. The physiological responses viz. Rectal temperature (RT), Respiratory rate (RR) and Pulse rate were significantly (P < 0.05) lower in group 2, with the provision of cooling. Skin surface temperature at thorax was significantly lower in cooled group relative to noncooled group. Blood pH and pO2 were significantly (P < 0.05) higher in heat stressed group as compared to the cooled group. pCO2, TCO2, HCO3, SBC, base excess in extracellular fluid (BEecf), base excess in blood (BEb), PCV and Hb were significantly (P < 0.05) higher in cooled group as compared to noncooled group. DMI was significantly (P < 0.05) higher in cooled relative to noncooled animals. Milk yield, FCM, fat yield, lactose yield and total solid yield was significantly higher (P < 0.05) in cooled group of Murrah buffaloes.
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Affiliation(s)
- Ovais Aarif
- Dairy Cattle Physiology Division, National Dairy Research Institute Karnal-132001, Haryana, India.
| | - Anjali Aggarwal
- Dairy Cattle Physiology Division, National Dairy Research Institute Karnal-132001, Haryana, India.
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49
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Rehan IF, Ueda K, Mitani T, Amano M, Hinou H, Ohashi T, Kondo S, Nishimura SI. Large-Scale Glycomics of Livestock: Discovery of Highly Sensitive Serum Biomarkers Indicating an Environmental Stress Affecting Immune Responses and Productivity of Holstein Dairy Cows. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:10578-10590. [PMID: 26595672 DOI: 10.1021/acs.jafc.5b04304] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Because various stresses strongly influence the food productivity of livestock, biomarkers to indicate unmeasurable environmental stress in domestic animals are of increasing importance. Thermal comfort is one of the basic principles of dairy cow welfare that enhances productivity. To discover sensitive biomarkers that monitor such environmental stresses in dairy cows, we herein performed, for the first time, large-scale glycomics on 336 lactating Holstein cow serum samples over 9 months between February and October. Glycoblotting combined with MALDI-TOF/MS and DMB/HPLC allowed for comprehensive glycomics of whole serum glycoproteins. The results obtained revealed seasonal alterations in serum N-glycan levels and their structural characteristics, such as an increase in high-mannose type N-glycans in spring, the occurrence of di/triantennary complex type N-glycans terminating with two or three Neu5Gc residues in summer and autumn, and N-glycans in winter dominantly displaying Neu5Ac. A multivariate analysis revealed a correlation between the serum expression levels of these season-specific glycoforms and productivity.
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Affiliation(s)
- Ibrahim F Rehan
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, Sapporo 001-0021, Japan
- Animal Behaviour and Management Department, Faculty of Veterinary Medicine, South Valley University , Qena 83523, Egypt
| | - Koichiro Ueda
- Animal Production System, Graduate School of Agriculture, Hokkaido University , N9, W9, Sapporo 060-8589, Japan
| | - Tomohiro Mitani
- Animal Production System, Graduate School of Agriculture, Hokkaido University , N9, W9, Sapporo 060-8589, Japan
| | - Maho Amano
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Hiroshi Hinou
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Tetsu Ohashi
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, Sapporo 001-0021, Japan
- Medicinal Chemistry Pharmaceuticals Co., Ltd., N21, W12, Kita-ku, Sapporo 001-0021, Japan
| | - Seiji Kondo
- Animal Production System, Graduate School of Agriculture, Hokkaido University , N9, W9, Sapporo 060-8589, Japan
| | - Shin-Ichiro Nishimura
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, Sapporo 001-0021, Japan
- Medicinal Chemistry Pharmaceuticals Co., Ltd., N21, W12, Kita-ku, Sapporo 001-0021, Japan
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50
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Palacio S, Bergeron R, Lachance S, Vasseur E. The effects of providing portable shade at pasture on dairy cow behavior and physiology. J Dairy Sci 2015; 98:6085-93. [DOI: 10.3168/jds.2014-8932] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 05/28/2015] [Indexed: 11/19/2022]
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