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Brindha S, Shinde SV, Bhure M, Chaudhari SP, Khan WA, Kurkure NV, Rawool DB, Barbuddhe SB. Occurrence of Coxiellosis in ruminants and its associated risk factors. Acta Trop 2024; 255:107235. [PMID: 38688445 DOI: 10.1016/j.actatropica.2024.107235] [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: 04/26/2024] [Accepted: 04/27/2024] [Indexed: 05/02/2024]
Abstract
Coxiellosis in animals is caused by the zoonotic pathogen, Coxiella burnetii. Although the disease is of public health importance it remains underdiagnosed and underreported. The cross- sectional study was aimed to estimate the occurrence of the disease in livestock of study area and also to identify the risk factors associated with the disease in animals. Blood, serum, and vaginal swabs samples were collected from 200 ruminants (cattle, sheep, and goats), across various farms in Karnataka, India. These samples were then screened using ELISA and PCR (com1 and IS1111). A questionnaire was administered to the farm owners to collect the risk factor-related information. About 5.26 % cattle, 12.3 % sheep, and 12.5 % goats were positive by ELISA. By PCR, 9.47 % cattle, 9.3 % sheep, and 10 % goats were positive. Overall, the occurrence of 14.73 %, 18.46 % and 17.5 % was estimated in cattle, sheep and goat, respectively. PCR targeting the IS1111 gene detected higher number of samples as positive as compared to the com1 gene PCR. Higher number of vaginal swab samples were detected as positive as compared to blood. History of reproductive disorders (OR: 4.30; 95 %CI:1.95- 9.46), abortion (OR: 30.94; 95 %CI:6.30- 151.84) and repeat breeding (OR:11.36; 95 %CI:4.16- 30.99) were significantly associated with coxiellosis (p < 0.005). Multivariable analysis by logistic regression model analysis suggested retained abortion, repeat breeding and rearing of animal in semi-intensive system as factors significantly associated with the infection. Cultural identification of the PCR positive samples were cultured using embryonated egg propagation and cell culture techniques and positivity was confirmed in six samples. Phylogenetic analysis of the com1 and IS1111 gene revealed clustering based on similar geographic locations. The study estimated the occurrence of the disease in the study area and identified the potential risk factors.
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Affiliation(s)
- S Brindha
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India
| | - Shilpshri V Shinde
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India.
| | - Mahaling Bhure
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India
| | - Sandeep P Chaudhari
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India
| | - Wiqar A Khan
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India
| | - Nitin V Kurkure
- Department of Veterinary Public Health, Nagpur Veterinary College, Maharashtra Animal and Fishery Sciences University, Nagpur 440006 India
| | - Deepak B Rawool
- ICAR-National Meat Research Institute, Hyderabad 500092 India
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Tejaswi G, Reddy RVC, Ponnanna NM, Sarangi LN. Molecular detection of bovine alphaherpesvirus-1 in cases of reproductive disorders among cattle and buffaloes in Gujarat. Virusdisease 2023; 34:526-530. [PMID: 38046059 PMCID: PMC10686898 DOI: 10.1007/s13337-023-00851-w] [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: 07/25/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023] Open
Abstract
Bovine alphaherpesvirus-1 (BoAHV-1) is an important viral pathogen that causes significant economic losses to the dairy industry. The present study aimed to determine the prevalence of BoAHV-1 in cases of bovine reproductive disorder. Clinical samples were collected from various villages in Gujarat using specialized FTA® cards and were tested using real-time PCR assay targeting the gB gene of BoAHV-1. Out of 401 animals, 18.20% (95% CI: 14.74-22.28%) tested positive for BoAHV-1 DNA. The percentage positivity of BoAHV-1 was 20.37% in abortion cases and 19.55% in retention of fetal membrane cases, while only one out of nine metritis cases screened in the study was positive for BoAHV-1 DNA. A higher percentage positivity in buffaloes (22.14%) compared to cattle (16.30%) was recorded, but this difference was not statistically significant (p = 0.169). The frequency of BoAHV-1 detection was higher among crossbreeds (16.76%) and exotics (19.61%) than among indigenous cattle (8.82%), although this difference was not statistically significant (p = 0.400). There was also no significant difference in frequency distribution among animals of varying parity, ranging from 15.20 to 33.33% (p = 0.540). This study confirms the widespread circulation of BoAHV-1 and highlights the need for its control and prevention.
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Affiliation(s)
- G. Tejaswi
- National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad, 500032 Telangana India
| | - R. V. Chandrasekhar Reddy
- National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad, 500032 Telangana India
| | - N. M. Ponnanna
- National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad, 500032 Telangana India
| | - L. N. Sarangi
- National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad, 500032 Telangana India
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Schrobback P, Gonzalez Fischer C, Mayberry D, Herrero M. On-farm investments into dairy cow health: evidence from 15 case study countries. Front Vet Sci 2023; 10:1288199. [PMID: 38026644 PMCID: PMC10643693 DOI: 10.3389/fvets.2023.1288199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
Managing investments in dairy cow health at a national and global scale, requires an improved understanding of current on-farm expenses for cow health (e.g., expenditure for medicine and veterinary consultations). The aim of this study was to assess on-farm health investments for typical dairy farms in 15 case study countries, including Argentina, Australia, Bangladesh, Brazil, Canada, India, China, Colombia, Indonesia, Kenya, New Zealand, Uganda, UK, Uruguay, and USA. The study was conducted using a descriptive analysis of a secondary data set that was obtained from the International Farm Comparison Network (IFCN). The results suggest that health expenditures take up a relatively small proportion (<10%) of the annual total production costs per cow across all countries in the sample. The means of production costs (e.g., feed, machinery) can take up to 90% of the total production costs for highly intensive systems, while these costs can be as low as 9% for extensive systems. This study highlights the importance of understanding on-farm animal health investments as a contribution to improved national and global decision making about animal health in the dairy sector.
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Affiliation(s)
- Peggy Schrobback
- Global Burden of Animal Diseases Program, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
- CSIRO, Agriculture and Food, St Lucia, QLD, Australia
| | - Carlos Gonzalez Fischer
- Global Burden of Animal Diseases Program, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
- Department of Global Development, College of Agriculture and Life Sciences and Cornell Atkinson Centre for Sustainability, Cornell University, Ithaca, NY, United States
| | - Dianne Mayberry
- Global Burden of Animal Diseases Program, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
- CSIRO, Agriculture and Food, St Lucia, QLD, Australia
| | - Mario Herrero
- Global Burden of Animal Diseases Program, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
- Department of Global Development, College of Agriculture and Life Sciences and Cornell Atkinson Centre for Sustainability, Cornell University, Ithaca, NY, United States
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Pushpa, Magotra A, Patil CS, Bangar YC, Sindhu V, Chaudhary P, Garg AR. Temporal variation and risk factors associated with reproductive disorders in Hardhenu (Bos taurus × Bos indicus) dairy cattle. Reprod Domest Anim 2023; 58:1404-1412. [PMID: 37605333 DOI: 10.1111/rda.14455] [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: 06/26/2023] [Revised: 07/29/2023] [Accepted: 08/03/2023] [Indexed: 08/23/2023]
Abstract
This study aimed to investigate the incidence and effect of non-genetic factors on reproductive disorders in the Hardhenu cattle population over a period of 11 years (2010-2021). The study included a total of 1340 cattle for calculating the incidence of reproductive disorders and analysed the occurrence of different reproductive disorders. In the present study, retention of placenta had highest frequency, accounting for approximately 18.36% of the incidence, followed by repeater cows (11.19%), metritis (6.27%), dystocia (0.60%), anestrus (0.45%) and prolapse (0.37%). Chi-square analysis revealed a significant relationship between the year and the incidence of reproductive disorders (p < .05). Logistic regression analysis of temporal variability of reproductive disorders was also analysed, with an increase in the odds from 2014 to 2020, peaking in 2017-2018 and 2018-2019. Logistic regression analysis showed that season and parity did not significantly influence the incidence of reproductive disorders. However, period of calving had a significant impact. Cows calving between 2008 and 2014 had a significantly lower odds ratio (0.13, 95% CI: 0.06-0.30), indicating a decreased risk, while those calving between 2014 and 2017 had a higher odds ratio (0.59, 95% CI: 0.38-0.90), suggesting an increased risk of reproductive disorders. Compared to parity 3, parity 1 (1.344, 95% CI: 0.869-2.08) and parity 2 (1.193, 95% CI: 0.768-1.851) showed highest odds ratio. Similarly, the odds ratio for winter (1.64, 95% CI: 0.93-2.89), summer (1.71, 95% CI: 0.89-3.26) and rainy season (1.64, 95% CI: 0.92-2.91) was higher as compared to autumn. The present results provided valuable insights into the incidence of various reproductive disorders and associated risk factors in Hardhenu cattle. These results can be utilized for targeted interventions to enhance reproductive health and overall productivity in dairy cattle.
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Affiliation(s)
- Pushpa
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Ankit Magotra
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - C S Patil
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Y C Bangar
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Vikas Sindhu
- Department of Animal Nutrition, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Pradeep Chaudhary
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Asha Rani Garg
- Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
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Ogola PA, Ngesa F, Makanji DL. Influence of access to extension services on milk productivity among smallholder dairy farmers in Njoro Sub-County, Nakuru County, Kenya. Heliyon 2023; 9:e20210. [PMID: 37809428 PMCID: PMC10559990 DOI: 10.1016/j.heliyon.2023.e20210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023] Open
Abstract
Inaccessibility to extension services by smallholder farmers remains one of the impediments to achieving high agricultural productivity and food security. Extension services play a critical role in information dissemination that can avert food insecurity and increase smallholder dairy farmers' incomes. However, access to extension services remains a significant challenge in developing countries. This study investigated the influence of access to extension services on milk productivity among smallholder dairy farmers in Njoro Sub-County, Nakuru County, Kenya. The study's target and accessible population was 17,000 smallholder dairy farmers. The study used simple random and proportionate sampling techniques to select study farmers. Nassiuma's formula generated a sample of 120 smallholder dairy farmers. The hypothesis underwent testing using simple linear regression. The regression results found a statistically significant influence between access to extension services and milk productivity at a 5% significance level (p < 0.05). Findings show that most smallholder dairy farmers accessed extension services through television, radio, neighbours, and friends. In contrast, the top animal husbandry practices that most farmers were interested in were parasite and disease control, breed selection, and feed preparation. The Government of Kenya mainly provided vaccination services, while the other veterinary services, including deworming, pregnancy and disease diagnosis, breed selection, and treatment, were dominated by private entities. The Government of Kenya should improve smallholder dairy farmers' access to extension services. The study recommends channeling agricultural information in all possible vernacular languages and Kiswahili, the national language, via television and radio platforms to reach all smallholder dairy cow farmers. Additionally, more emphasis should be on the importance of appropriate milking techniques and record-keeping among smallholder dairy farmers to help monitor their animals' health, feeding, breeding, and milk productivity.
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Affiliation(s)
- Prisca Akinyi Ogola
- Department of Agricultural Education and Extension, Egerton University, Kenya
| | - Fredrick Ngesa
- Department of Agricultural Education and Extension, Egerton University, Kenya
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Pérez-Marín CC, Quintela LA. Current Insights in the Repeat Breeder Cow Syndrome. Animals (Basel) 2023; 13:2187. [PMID: 37443985 DOI: 10.3390/ani13132187] [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: 05/28/2023] [Revised: 06/25/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Cows can have difficulties becoming pregnant, and in certain cases, these reproductive failures do not have an evident cause. Furthermore, when these failures are repeated three or more times with estrous cycles of normal duration and in the absence of evident clinical signs, it is considered repeat breeder cow (RBC) syndrome. A substantive incidence of RBC syndrome has been reported all over the world, which severely affects the farm economy. This paper reviews those studies particularly focused on RBC syndrome from 2000 to 2023 but also includes consolidated information until this date. Hormonal imbalances, undetectable oviductal or uterine defects, or poor oocyte or embryo quality have been reported as causes of RBC syndrome, while subclinical endometritis has been considered a relevant causal agent. However, it is unresolved why this condition is recurrent in certain animals, despite the implementation of corrective management actions or treatments. Recent studies evaluate the putative role of certain genes, factors, hormones, or proteins in the pathogenesis of RBC syndrome. Numerous risk factors contribute to the appearance of this syndrome, and some of them could be mitigated to partially prevent this infertility, while others cannot be changed. Due to the complexity of this syndrome, it is important to increase knowledge about the mechanisms involved, develop new diagnostic tools to differentiate causal agents, and implement new treatments to restore fertility. There is consensus about the huge repercussions of this syndrome on farm profitability, but further studies are now needed to describe its economic impact.
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Affiliation(s)
- Carlos Carmelo Pérez-Marín
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
| | - Luis Angel Quintela
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Universidade de Santiago de Compostela, 27002 Lugo, Spain
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Shai K, Lebelo SL, Ng'ambi JW, Mabelebele M, Sebola NA. A review of the possibilities of utilising medicinal plants in improving the reproductive performance of male ruminants. ALL LIFE 2022. [DOI: 10.1080/26895293.2022.2147225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- K. Shai
- Department of Agricultural Economics and Animal Production, University of Limpopo, Sovenga, South Africa
| | - S. L. Lebelo
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South Africa
| | - J. W. Ng'ambi
- Department of Agricultural Economics and Animal Production, University of Limpopo, Sovenga, South Africa
| | - M. Mabelebele
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South Africa
| | - N. A. Sebola
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South Africa
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Küçükoflaz M, Sariözkan S. Financial losses related to placental retention in dairy herds in Turkey. ARQ BRAS MED VET ZOO 2022. [DOI: 10.1590/1678-4162-12782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
ABSTRACT This study aimed to calculate the financial losses related to placental retention (PR) in dairy cattle in Turkey taking into consideration the previous study results in three different geographical regions and 87 herds of Turkey. The mean prevalence of PR in dairy herds was assumed to be 5.6% (4.1-6.7%). Direct (milk losses, treatment, and involuntary culling) and indirect losses (extended calving interval and extra insemination) were calculated. In the financial analysis, direct and indirect losses were calculated according to the current prices of 2022. As a result, the financial losses per infected dairy cattle were estimated at $ 249.7 (624 Lt milk eq.). A total of 67.7% ($173) of these resulted from direct losses, and the remainder 32.3% ($82.5), were indirect losses. PR was responsible for a total of $92 million (ranged from $67-110 million) losses, which equates to 1.2% (0.8-1.14%) of the annual milk production in Turkey. In conclusion, magnitude of PR-related losses will provide evidence-based decision support to the farmers and policymakers when determining the priorities for disease mitigation and control strategies.
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Chaikol W, Yadmak C, Yama P, Jitjumnong J, Sangkate M, U-Krit W, Promsao N, Suriard A, Mektrirat R, Panatuk J, Van Doan H, Wang CK, Tang PC, Moonmanee T. Ovarian luteal category at the time of exogenous progesterone treatment alters pre-ovulatory follicle size and pregnancy outcome but not initial GnRH treatment in repeat-breeder crossbred dairy heifers submitted to the 7-day fixed-time AI protocol. Vet Anim Sci 2022; 17:100257. [PMID: 35812775 PMCID: PMC9256640 DOI: 10.1016/j.vas.2022.100257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/04/2022] [Accepted: 06/17/2022] [Indexed: 11/25/2022] Open
Abstract
Ovarian and fertility outcomes were similar for repeat-breeder crossbred dairy heifers with or without initial GnRH treatment. Presence of luteal tissue at the time of progesterone (P4) treatment in infertile heifers resulted in a 68.6% pregnancy rate (PR). The likelihood of PR was higher in infertile heifers bearing luteal tissue on the day of exogenous P4 trigger.
Repeat breeding is a substantial problem in heifer and cow breeding leading to greater infertility for female dairy herds. The aim of present study was to investigate the impact of corpus luteum (CL) presence and category and the first gonadotropin-releasing hormone (GnRH) administration concurrent with exogenous progesterone (P4) treatment on the largest follicle (LF) size and pregnancy rate (PR) in repeat-breeder crossbred dairy heifers submitted to the fixed-time artificial insemination (AI) protocol. Heifers (n= 243) were synchronised with (+GnRH) or without (–GnRH) first GnRH in the 7-day P4-GnRH-prostaglandin F2α-based programme. Each GnRH group was divided on presence of CL into two groups (+CL and –CL) in a 2 × 2 factorial arrangement. The PR was similar among –GnRH–CL (20.7%), –GnRH+CL (68.8%), +GnRH–CL (30.4%), and +GnRH+CL (68.3%) groups. However, presence of CL in heifers produced a 43.6% increase in PR compared to PR of heifers without CL (odds ratio = 6.550). Heifers bearing large-sized CL had greater large-sized LF on the day of fixed-time AI and PR. Plasma P4 concentration was positively related with CL diameter (r= 0.845; p < 0.001). The diameter of ovarian LF on the day of fixed-time AI was positively associated with P4 concentrations (r= 0.512; p < 0.001). We highlight that ovarian CL presence and category at the time of exogenous P4 treatment alters pre-ovulatory follicle size and PR but not initial GnRH treatment in repeat-breeder crossbred dairy heifers submitted to service with the 7-day fixed-time AI programme.
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Affiliation(s)
- Warunya Chaikol
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand
| | | | - Punnawut Yama
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand
| | - Jakree Jitjumnong
- Department of Animal Science, National Chung Hsing University, Taiwan
| | - Molarat Sangkate
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand
| | - Warittha U-Krit
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand.,Sing Buri College of Agriculture and Technology, Thailand
| | - Nalinthip Promsao
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand
| | - Assawadet Suriard
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand
| | - Raktham Mektrirat
- Department of Veterinary Biosciences and Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Thailand
| | - Julakorn Panatuk
- Faculty of Animal Science and Technology, Maejo University, Thailand
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand.,Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Thailand
| | - Chien-Kai Wang
- Department of Animal Science, National Chung Hsing University, Taiwan.,The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University, Taiwan.,The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taiwan
| | - Tossapol Moonmanee
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Thailand.,Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Thailand
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Barbato O, Menchetti L, Brecchia G, Barile VL. Using Pregnancy-Associated Glycoproteins (PAGs) to Improve Reproductive Management: From Dairy Cows to Other Dairy Livestock. Animals (Basel) 2022; 12:ani12162033. [PMID: 36009621 PMCID: PMC9404451 DOI: 10.3390/ani12162033] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 12/28/2022] Open
Abstract
Simple Summary Pregnancy loss is a major cause of infertility in dairy animals, particularly in cattle, which affects the productivity and profitability of farms. Detecting these unsuccessful pregnancies could offer farmers the opportunity to reduce the economic damage caused by pregnancy loss. The determination of proteins secreted by the placenta and related to the presence of a viable conceptus called pregnancy-associated glycoproteins (PAGs) represents a diagnostic tool to identify pregnant or non-pregnant animals and to predict early pregnancy failures. This review describes the state of the art related to PAGs’ function, pregnancy profile, and use in reproductive management in bovine and other dairy livestock. Abstract Pregnancy success represents a major issue for the economic income of cattle breeders. Early detection of pregnant and non-pregnant animals, as well as the prediction of early pregnancy failure, can influence farm management decisions. Several diagnostic tools for pregnancy are currently available. Among these, pregnancy-associated glycoproteins (PAGs) have been shown to be useful for identifying the presence of vital embryos and for pregnancy follow-up monitoring. This review presents an overview of the PAGs’ functions, their pregnancy trends, and their use as a tool to improve reproductive management in bovine and other dairy livestock, such as small ruminants and buffalos.
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Affiliation(s)
- Olimpia Barbato
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy
- Correspondence:
| | - Laura Menchetti
- Department of Veterinary Medicine, University of Milano, Via dell’Università 6, 26900 Lodi, Italy
| | - Gabriele Brecchia
- Department of Veterinary Medicine, University of Milano, Via dell’Università 6, 26900 Lodi, Italy
| | - Vittoria Lucia Barile
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), Via Salaria 31, 00015 Monterotondo, Italy
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Frequency of an X-Linked Maternal Variant of the Bovine FOXP3 Gene Associated with Infertility in Different Cattle Breeds: A Pilot Study. Animals (Basel) 2022; 12:ani12081044. [PMID: 35454290 PMCID: PMC9030747 DOI: 10.3390/ani12081044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 11/16/2022] Open
Abstract
Immune adaptation plays an essential role in determining pregnancy, which has been shown to be dependent on sufficient immunological tolerance mediated by FOXP3+ regulatory T cells. Recently, an X-linked maternal single-nucleotide polymorphism (SNP), located 2175 base pairs upstream of the start codon in the bovine FOXP3 gene (NC_037357.1: g.87298881A>G, rs135720414), was identified in Japanese Black (JB: Bos taurus) cows in association with recurrent infertility. However, with the exception of JB cows, the frequency of this SNP has yet to be studied in other cow populations. In this study, we thus aimed to evaluate the frequency of this SNP in different cow breeds. Between 2018 and 2021, a total of 809 DNA samples were obtained from 581 JB, 73 Holstein Friesian (HF: B. taurus), 125 Korean Hanwoo (KH: B. taurus coreanae), and 30 Indonesian Madura (IM: a crossbreed between B. indicus and B. javanicus) cows, which were genotyped using a TaqMan probe-based real-time polymerase chain reaction assay designed in this study. The frequency of the G allele was found to be relatively high in local IM (0.700), moderate in dairy HF (0.466), and low in beef JB (0.250) and KH (0.112) cows, with differences in the frequencies between each group being shown to be statistically significant (p < 0.005) using Fisher’s exact test. The results obtained in this study indicate that the G allele frequencies of the identified the SNP differ markedly in different breeds of taurine and indicine cattle. Given these findings, it would thus be important to evaluate the relationships between high frequencies of the G allele and infertility in different breeds.
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