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Chen Q, Cui YF, Zhang ZX, Jiang FC, Meng XY, Li JJ, Cui DY, Jia JL. Effect of alfalfa supplementary change dietary non-fibrous carbohydrate (NFC) to neutral detergent fiber (NDF) ratio on rumen fermentation and microbial function in Gansu alpine fine wool sheep ( Ovis aries). Anim Biotechnol 2024; 35:2262539. [PMID: 37782319 DOI: 10.1080/10495398.2023.2262539] [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] [Indexed: 10/03/2023]
Abstract
Bodyweight loss and rumen microbial dysfunction of grazing sheep was a challenge for the sheep production industry during cold season, which were considered to correlated with under-roughage-feeding. Alfalfa is a good roughage supplementary for ruminants, which can improve grazing sheep bodyweight-loss and rumen microbial dysfunction during grass-withering period. This study evaluated the effects of alfalfa hay supplementary change dietary non-fibrous carbohydrate/neutral detergent fiber (NFC/NDF) ratios on rumen fermentation and microbial function of Gansu alpine fine wool sheep during extreme cold season. 120 ewes (3-4 yrs) with an average body weight of 28.71 ± 1.22 kg were allocated randomly into three treatments, and fed NFC/NDF of 1.92 (H group), 1.11 (M group), and 0.68 (L group), respectively. This study was conducted for 107 d, including 7 d of adaption to the diets. The rumen fermentation parameters and microbial characteristics were measured after the end of feeding trials. The results showed that the concentrations of sheep body weight, nitrogen components (Total-N, Soluble protein-N and Ammonia-N), blood biochemical indices (LDH, BUN and CHO) and ruminal volatile fatty acids (TVFA and propionate) significantly increased with an increase in the proportion of NFC/NDF ratios (p < .05), and the acetate and acetate/propionat ratio presented a contrary decreasing trend (p < .05). A total of 1018 OTUs were obtained with 97% consistency. Ruminococcus, Ruminococcaceae and Prevotella were observed as the predominant phyla in ruminal fluid microbiota. Higher NFC/NDF ratios with Alfalfa supplementary increased the richness and diversity of ruminal fluid microbiota, and decreased ruminal fluid microbiota beta-diversity. Using clusters of orthologous groups (COG), the ruminal fluid microbiota of alfalfa supplementary feeding showed low immune pathway and high carbohydrate metabolism pathway. In summary, the study suggested that there was an increasing tendency in dietary NFC/NDF ratio of 1.92 in body weight, ruminal fermentation, microbial community composition and fermentation characteristics through developing alfalfa supplementary system.
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Affiliation(s)
- Qian Chen
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, P.R. China
- School of Life Science, Qilu Normal University, Jinan, Shandong, P.R. China
| | - Yun-Feng Cui
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, P.R. China
| | - Zhao-Xi Zhang
- The Bureau of Animal Industry of Zhangqiu, Jinan, Shandong, P.R. China
| | - Fu-Cheng Jiang
- Canada Lallemand Inc, Beijing Office, Beijing, P.R. China
| | - Xiang-Yu Meng
- The Bureau of Animal Industry of Zhangqiu, Jinan, Shandong, P.R. China
| | - Jin-Jin Li
- School of Life Science, Qilu Normal University, Jinan, Shandong, P.R. China
| | - Da-Yong Cui
- School of Life Science, Qilu Normal University, Jinan, Shandong, P.R. China
| | - Jian-Lei Jia
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, P.R. China
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Kim M, Park T, Park C, Baek YC, Cho A, Lee HG, Kim E, Bok EY, Jung YH, Hur TY, Do YJ. Impact of rumen cannulation surgery on rumen microbiota composition in Hanwoo steers. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2024; 66:353-365. [PMID: 38628677 PMCID: PMC11016741 DOI: 10.5187/jast.2024.e17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/06/2024] [Accepted: 02/06/2024] [Indexed: 04/19/2024]
Abstract
Rumen cannulation is a surgical technique used to collect rumen contents from ruminants. However, rumen cannulation surgery may potentially impact the composition of the rumen microbiota. This study aimed to examine the longitudinal alterations in the rumen microbiota composition of Hanwoo steers after cannulation surgery. In this study, eight Hanwoo steers were used; four steers underwent rumen cannulation surgery (cannulation group), while the remaining four were left intact (control group). Rumen samples were collected from all eight steers using the stomach tubing method on the day before surgery (day 0) and on postoperative days 1, 4, 7, 10, 14, 17, 21, 24, and 28, resulting in 80 samples (10 timepoints × 8 animals). The microbiota of all 80 samples were analyzed using 16S rRNA gene amplicon sequencing with Quantitative Insights into Microbial Ecology version 2 (QIIME2). There were no significant differences (p > 0.05) in all major phyla and most major genera representing at least 0.5% of total sequences across all 80 samples between the control and cannulation groups on the preoperative and postoperative days. However, while the alpha diversity indices did not differ (p > 0.05) between the two groups on the preoperative day, they significantly differed (p < 0.05) between the two groups on the postoperative days. Further, the overall microbial distribution based on both unweighted and weighted principal coordinate analysis plots significantly differed (p < 0.05) between the two groups on both the preoperative and postoperative days. Orthogonal polynomial contrasts indicated that major genera and microbial diversity in the cannulation group decreased following surgery but returned to their initial states by postoperative day 28. In conclusion, this study demonstrates that rumen cannulation surgery affects some major taxa and microbial diversity, suggesting that the rumen cannulation method can alter the composition of rumen microbiota in Hanwoo steers.
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Affiliation(s)
- Minseok Kim
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Tansol Park
- Department of Animal Science and
Technology, Chung-Ang University, Anseong 17546, Korea
| | - Cheolju Park
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Youl-Chang Baek
- Animal Nutrition & Physiology
Division, National Institute of Animal Science, Wanju 55365,
Korea
| | - Ara Cho
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Han Gyu Lee
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Eunju Kim
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Eun-Yeong Bok
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Young-Hun Jung
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Tai-Young Hur
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
| | - Yoon Jung Do
- Division of Animal Diseases &
Health, National Institute of Animal Science, Wanju 55365,
Korea
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Gao Z, Raza SHA, Ma B, Zhang F, Wang Z, Hou S, Almohaimeed HM, Alhelaify SS, Alzahrani SS, Alharthy OM, Gui L. Effects of dietary wheat supplementation levels on growth performance, rumen bacterial community and fermentation parameters in Chinese Tibetan Sheep. J Anim Physiol Anim Nutr (Berl) 2024; 108:470-479. [PMID: 38014916 DOI: 10.1111/jpn.13907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 08/31/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023]
Abstract
The objective of this study was to evaluate various wheat supplementation levels on rumen microbiota and fermentation parameter in Tibetan sheep. A total of ninety ram with an average 12.37 ± 0.92 kg at the age of 2 months were randomly allocated to three treatments: 0% wheat diet (CW, N = 30), 10% wheat diet (LW, N = 30), and 15% wheat diet (HW, N = 30) on a dry matter basis. The experiment was conducted over a period of 127 days, including 7 days of adaption to the diets. Our results showed that sheep fed 10% wheat exhibited optimal average daily gain and feed gain ratio compared with HW group (p < 0.05). The serum alkaline phosphatase concentration was the lowest when fed the 10% wheat diet (p < 0.05), whereas serum aspartate aminotransferase concentration was the highest (p < 0.05). Both acetate and propionate increased with increase in dietary wheat ratio (p < 0.05), while a greater decrease in concentrations of NH3 -N was observed (p < 0.05). In rumen fluid, 3413 OTUs were obtained with 97% consistency. Phylum Firmicutes was the predominant bacteria and accounted for 49.04%. The CW groups supported significantly increased the abundance of Bacteroidetes (p < 0.05), as compared with the HW group. The abundance of Bacteroidales_UCG-001, Ruminococcus, and Mitsuokella possessed a higher relative abundance in HW group (p < 0.05). No differences in the bacterial community and fermentation parameters were observed between the sheep fed 0% and 10% wheat (p > 0.05). Ruminal bacterial community structure was significantly correlated with isobutyrite (r2 = 0.4878, p = 0.035) and valerate (r2 = 0.4878, p = 0.013). In conclusion, supplementation of 10% wheat in diet promoted the average daily gain and never altered microbial community structure and fermentation pattern, which can be effectively replace partial corn in Chinese Tibetan Sheep.
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Affiliation(s)
- Zhanhong Gao
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
| | - Sayed Haidar Abbas Raza
- Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan, China
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Boyan Ma
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
| | - Fengshuo Zhang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
| | - Zhiyou Wang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
| | - Shengzhen Hou
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
| | - Hailah M Almohaimeed
- Department of Basic Science, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Seham Sater Alhelaify
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Seham Saeed Alzahrani
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Ohud Muslat Alharthy
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Linsheng Gui
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province, People's Republic of China
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Li LP, Qu L, Li T. Supplemental dietary Selenohomolanthionine affects growth and rumen bacterial population of Shaanbei white cashmere wether goats. Front Microbiol 2022; 13:942848. [PMID: 36338028 PMCID: PMC9632625 DOI: 10.3389/fmicb.2022.942848] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/28/2022] [Indexed: 11/27/2022] Open
Abstract
Selenium (Se) is an important trace element for all livestock growth. However, little is known about the dietary supplementation of Selenohomolanthionine (SeHLan) effect on growth and rumen microbiota of cashmere goats. In this study, thirty-two growing Shaanbei white cashmere wether goats with mean body weight (26.18 ± 2.71) kg were randomly assigned into 4 treatments, each with 8 replicates. The goats in 4 experimental groups were fed the basal diet (0.016 mg/kg Se) added with organic Se in the form of SeHLan, namely, control group (CG, added 0 mg/kg Se), low Se group (LSE, added 0.3 mg/kg Se), medium Se group (MSE, added 0.6 mg/kg Se), and high Se group (HSE, added 1.2 mg/kg Se). The feed experiment lasted for 70 days including 10-day adaptation, followed by 11 days digestibility trial including 7-day adaptation and 4-day collection period. On the last day of feeding experiment, rumen fluid was collected for microbial community analysis. The feed, orts, and fecal samples were collected for chemical analysis during digestibility trial. The results showed that average daily feed intake (ADFI) and the apparent digestibility of crude protein (CP) were both quadratic ally increased with increased SeHLan supply (Pquadratic < 0.05), while average daily gain (ADG) and feed conversion ratio (FCR) showed a linear response (Plinear < 0.05). The ADFI and ADG were all highest in the MSE group, which also had the lowest FCR (P < 0.05). Alpha diversity indices of the microbial community did not differ among four treatments. While principal coordinates analysis (PCoA) showed that rumen bacterial population differed among four groups. Taxonomic analysis revealed that Bacteroidetes, Firmicutes, and Euryarchaeota were the dominant phyla. The dominant families were Prevotellaceae, Selenomonadaceae, Methanobacteriaceae, and Bifidobacteriaceae. The significantly different rumen bacterial genera were found to be Methanobrevibacter, Quinella, Christensenellaceae_R-7_group, Veillonellaceae_UCG-001, and Succinivibrionaceae_UCG-002 (P < 0.05). In addition, Tax4fun analysis revealed that SeHLan supplemented groups enhanced the enrichment of genes related to energy metabolism, amino acid metabolism, carbohydrate metabolism, and enzymes. Twenty-eight pathways showed significant differences among four treatment groups (P < 0.05). In conclusion, dietary supplementation of medium SeHLan significantly affects rumen bacterial composition and ultimately promotes Shaanbei white cashmere wether goats nutrient digestibility and growth.
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Affiliation(s)
- Long-Ping Li
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin, China
- *Correspondence: Long-Ping Li,
| | - Lei Qu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin, China
| | - Tuo Li
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin, China
- College of Life Sciences, Yulin University, Yulin, China
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Liu H, Ran T, Zhang C, Yang W, Wu X, Degen A, Long R, Shi Z, Zhou J. Comparison of rumen bacterial communities between yaks (Bos grunniens) and Qaidam cattle (Bos taurus) fed a low protein diet with different energy levels. Front Microbiol 2022; 13:982338. [PMID: 36147854 PMCID: PMC9486477 DOI: 10.3389/fmicb.2022.982338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
The yak (Bos grunniens), an indigenous bovine on the Qinghai-Tibetan plateau (QTP), is reported to digest low quality forage to a greater extent and to require less protein and energy for maintenance than the introduced Qaidam cattle (Bos taurus). Ruminal bacteria play a major role in feed degradation, and therefore, we hypothesized that ruminal bacteria composition would differ between yaks and cattle, and confer an advantage to yaks for poor quality diets. To test our hypothesis, we determined the ruminal bacteria profiles, rumen fermentation parameters, and enzyme activities in these bovine species consuming a low-protein diet differing in energy level. Six castrated yaks (155 ± 5.8 kg) and 6 castrated Qaidam cattle (154 ± 8.0 kg) were used in two concurrent 4 × 4 Latin square designs with 2 additional animals of each species in each period. The animals were offered a low-protein diet of 70.4 g/kg dry matter (DM) and one of four metabolizable energy levels, namely 6.62, 8.02, 9.42, and 10.80 MJ/kg. Ruminal pH, concentrations of ammonia-N and total volatile fatty acids (VFAs), the molar proportion of acetate, and the ratio of acetate to propionate (A:P) were greater (P < 0.05), whereas the molar proportion of propionate was lesser (P = 0.043) in yaks than in cattle. With increasing dietary energy level, ruminal pH, the molar proportion of acetate and the ratio of A:P decreased linearly (P < 0.05), whereas, the concentration of total VFAs, molar proportions of propionate, butyrate, iso-butyrate, and iso-valerate and concentration of ammonia-N increased linearly (P < 0.05). The relative abundance (RA) of Firmicutes increased linearly (P < 0.01), whereas, the RA of Bacteroidetes decreased linearly (P < 0.001) with increasing energy level in both bovine species. The RAs of Prevotella and Rikenellaceae_RC9_gut_group decreased linearly (P < 0.05) with increasing energy level in both yaks and cattle. The RAs of fibrolytic (e.g., Rikenellaceae_RC9_gut_group), and H2-incorporating (e.g., Quinella) bacteria were greater (P < 0.05) in yaks than in cattle. We concluded that the two bovines differ in ruminal bacterial profiles and rumen fermentation parameters, and confer an advantage to yaks over cattle in consuming a low protein diet with differing energy level.
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Affiliation(s)
- Hu Liu
- State Key Laboratory of Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- International Centre for Tibetan Plateau Ecosystem Management, College of Ecology, Lanzhou University, Lanzhou, China
| | - Tao Ran
- State Key Laboratory of Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Chengfu Zhang
- State Key Laboratory of Barley and Yak Germplasm Resources and Genetic Improvement, Institute of Animal Science and Veterinary, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, China
| | - Wenzhu Yang
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada (AAFC), Lethbridge, AB, Canada
| | - Xiukun Wu
- Northwest Institute of Ecological Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
| | - Allan Degen
- Desert Animal Adaptations and Husbandry, Wyler Department of Dryland Agriculture, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Be’er Sheva, Israel
| | - Ruijun Long
- International Centre for Tibetan Plateau Ecosystem Management, College of Ecology, Lanzhou University, Lanzhou, China
| | - Zunji Shi
- State Key Laboratory of Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- *Correspondence: Zunji Shi,
| | - Jianwei Zhou
- State Key Laboratory of Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- Jianwei Zhou,
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Sim S, Lee H, Yoon S, Seon H, Park C, Kim M. The impact of different diets and genders on fecal microbiota in Hanwoo cattle. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2022; 64:897-910. [PMID: 36287745 PMCID: PMC9574620 DOI: 10.5187/jast.2022.e71] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/11/2022] [Accepted: 08/25/2022] [Indexed: 11/05/2022]
Abstract
Bovine fecal microbiota is important for host health and its composition can be
affected by various factors, such as diet, age, species, breed, regions, and
environments. The objective of this study was to evaluate the impact of diet and
gender on fecal microbiota in Korean native Hanwoo cattle. The 16S rRNA gene
amplicon sequencing of fecal microbiota was conducted from 44 Hanwoo cattle
divided into four groups: (1) 11 heifers fed an oat hay plus total mixed ration
(TMR) diet for breeding (HOTB), (2) 11 heifers fed an early fattening TMR diet
(HEFT), (3) 11 steers fed the early fattening TMR diet (SEFT), and (4) 11 steers
fed the late fattening TMR diet (SLFT). Firmicutes and Bacteroidota were the
first and second most dominant phyla in all the samples, respectively. The
Firmicutes/Bacteroidota (F/B) ratio associated with feed efficiency was
significantly greater in the SLFT group than in the other groups. At the genus
level, Romboutsia, Paeniclostridium, and
Turicibacterwere the most abundant in the SLFT while
Akkermansia, Bacteroides, and
Monoglobus were the most abundant in the HOTB group.
Although the same early fattening TMR diet was fed to Hanwoo heifers and steers,
Marvinbryantia and Coprococcus were the
most abundant in the HEFT group while Alistipes and
Ruminococcus were the most abundant in the SEFT group.
Shannon and Simpson diversity indices were significantly lower in the SLFT group
than in the other groups. Distribution of fecal microbiota and functional
genetic profiles were significantly different among the four treatment groups.
The present study demonstrates that different diets and genders can affect fecal
microbiota and the F/B ratio may be associated with feed efficiency in Hanwoo
cattle. Our results may help develop strategies to improve gut health and
productivity through manipulation of fecal microbiota using the appropriate diet
considering Hanwoo cattle gender.
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Affiliation(s)
- Seunghyeun Sim
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Huseong Lee
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea,Graduate School of Agricultural Science,
Tohoku University, Sendai 980-0845, Japan
| | - Sang Yoon
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Hyeonsu Seon
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Cheolju Park
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea
| | - Minseok Kim
- Division of Animal Science, Chonnam
National University, Gwangju 61186, Korea,Corresponding author Minseok Kim,
Division of Animal Science, Chonnam National University, Gwangju 61186, Korea.
Tel: +82-62-530-2128, E-mail:
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Ma B, Zhang C, Raza SHA, Yang B, Aloufi BH, Alshammari AM, AlGabbani Q, Khan R, Hou S, Gui L. Effects of Dietary Non-Fibrous Carbohydrate (NFC) to Neutral Detergent Fiber (NDF) Ratio Change on Rumen Bacterial Community and Ruminal Fermentation Parameters in Chinese Black Tibetan Sheep (Ovis aries). Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106793] [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]
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Characterization of the Bacterial Community of Rumen in Dairy Cows with Laminitis. Genes (Basel) 2021; 12:genes12121996. [PMID: 34946945 PMCID: PMC8700892 DOI: 10.3390/genes12121996] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 01/07/2023] Open
Abstract
Laminitis is the inflammation of the lamella, and it has caused great economic loss to the dairy industry and attracted wide attention around the world. In recent years, microbiota are considered to play a significant role in various diseases processes. Therefore, our study aimed to explore the characteristics of ruminal microbiota in laminitis cows. The serum of bovines with or without laminitis was collected to detect concentrations of lipopolysaccharide (LPS), lactic acid, and histamine, and ruminal fluid was collected for 16S rDNA sequence analysis. The results showed a significant increase in LPS and lactic acid levels in the laminitis group compared to the control group cows. In addition, a higher abundance of Candidatus Saccharimonas, Saccharofermentans, Erysipelotrichaceae UCG-009 genus, Acetobacter pasteurianus, Clostridium papyrosolvens, Ruminococcaceae bacterium AE2021, Porphyromonas crevioricanis, Pseudomonas boreopolis, Pseudomonas psychrotolerans, Rothia nasimurium, and Rothia pickettii was detected in the rumen fluid of laminitis bovines. In conclusion, this article confirms that there are differences in rumen microbiota between healthy and laminitis bovines. The elevated abundance of bacteria that enrich acid-enhancing metabolites, as well as increase the concentration of lactic acid and LPS, could be harmful factors to bovines and increase the risk of laminitis.
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