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Wang Z, Liu L, Pang F, Zheng Z, Teng Z, Miao T, Fu T, Rushdi HE, Yang L, Gao T, Lin F, Liu S. Novel insights into heat tolerance using metabolomic and high-throughput sequencing analysis in dairy cows rumen fluid. Animal 2022; 16:100478. [PMID: 35247705 DOI: 10.1016/j.animal.2022.100478] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 01/10/2023] Open
Abstract
Heat stress influences rumen fermentative processes with effects on the physiology and production of dairy cows. However, the underlying relationship between rumen microbiota and its associated metabolism with heat tolerance in cows have not been extensively described yet. Therefore, the main objective of this study was to investigate differential heat resistance in Holstein cows using rumen bacterial and metabolome analyses. We performed both principal component analysis and membership function analysis to select seven heat-tolerant (HT) and seven heat-sensitive (HS) cows. Under heat stress conditions, the HT cows had a significantly (P < 0.05) higher propionic acid content than the HS cows; while measures of the respiratory rate, acetic, and butyric acid in the HT cows were significantly (P < 0.05) lower compared with the HS cows. Also, the HT cows showed lower (P < 0.01) rectal temperature and acetic acid to propionic acid ratio than the HS group of cows. Omics sequencing revealed that the relative abundances of Muribaculaceae, Rikenellaceae, Acidaminococcaceae, Christensenellaceae, Rikenellaceae_RC9_gut_group, Succiniclasticum, Ruminococcaceae_NK4A214_group and Christensenellaceae_R-7_group were significantly (P < 0.01) higher in the HT cows; whereas Prevotellaceae, Prevotella_1, Ruminococcaceae_UCG-014, and Shuttleworthia were significantly (P < 0.01) lower in HT cows compared to HS cows. Substances mainly involved in carbohydrate metabolism, including glycerol, mannitol, and maltose, showed significantly higher content in the HT cows (P < 0.05) compared to that in the HS cows. Simultaneously, distinct metabolites were significantly correlated with differential bacteria, suggesting that glycerol, mannitol, and maltose could serve as potential biomarkers for determining heat resistance that require further study. Overall, distinct changes in the rumen microbiota and metabolomics in the HT cows may be associated with a better adaptability to heat stress. These findings suggest their use as diagnostic tools of heat tolerance in dairy cattle breeding schemes.
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Affiliation(s)
- Z Wang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - L Liu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - F Pang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - Z Zheng
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - Z Teng
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, People's Republic of China
| | - T Miao
- Henan Huahua Niu Dairy Co., Ltd, Zhengzhou, People's Republic of China
| | - T Fu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - H E Rushdi
- Department of Animal Production, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - L Yang
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - T Gao
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - F Lin
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China
| | - S Liu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, People's Republic of China.
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Zheng C, Wu Y, Liang ZH, Pi JS, Cheng SB, Wei WZ, Liu JB, Lu LZ, Li CF, Zhang H. Plasma metabolites associated with physiological and biochemical indexes indicate the effect of caging stress on mallard ducks (Anas platyrhynchos). Anim Biosci 2021; 35:224-235. [PMID: 34474531 PMCID: PMC8738941 DOI: 10.5713/ab.21.0241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/23/2021] [Indexed: 11/27/2022] Open
Abstract
Objective Cage rearing has critical implications for the laying duck industry because it is convenient for feeding and management. However, caging stress is a type of chronic stress that induces maladaptation. Environmental stress responses have been extensively studied, but no detailed information is available about the comprehensive changes in plasma metabolites at different stages of caging stress in ducks. We designed this experiment to analyze the effects of caging stress on performance parameters and oxidative stress indexes in ducks. Methods Liquid chromatography tandem mass spectrometry (LC/MS-MS) was used to determine the changes in metabolites in duck plasma at 5 (CR5), 10 (CR10), and 15 (CR15) days after cage rearing and traditional breeding (TB). The associated pathways of differentially altered metabolites were analyzed using Kyoto encyclopedia of genes and genomes (KEGG) database. Results The results of this study indicate that caging stress decreased performance parameters, and the plasma total superoxide dismutase levels were increased in the CR10 group compared with the other groups. In addition, 1,431 metabolites were detected. Compared with the TB group, 134, 381, and 190 differentially produced metabolites were identified in the CR5, CR10, and CR15 groups, respectively. The results of principal component analysis (PCA) show that the selected components sufficiently distinguish the TB group and CR10 group. KEGG analysis results revealed that the differentially altered metabolites in duck plasma from the CR5 and TB groups were mainly associated with ovarian steroidogenesis, biosynthesis of unsaturated fatty acids, and phenylalanine metabolism. Conclusion In this study, the production performance, blood indexes, number of metabolites and PCA were compared to determine effect of the caging stress stage on ducks. We inferred from the experimental results that caging-stressed ducks were in the sensitive phase in the first 5 days after caging, caging for approximately 10 days was an important transition phase, and then the duck continually adapted.
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Affiliation(s)
- Chao Zheng
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China.,School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yan Wu
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China
| | - Zhen Hua Liang
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China
| | - Jin Song Pi
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China
| | - Shi Bin Cheng
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China
| | | | - Jing Bo Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Li Zhi Lu
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Cheng Feng Li
- Hubei Shendan Healthy Food Co..Ltd, Anlu, 432600, China
| | - Hao Zhang
- Institute of Animal Husbandry and Veterinary Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Wuhan, 430064, China
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Liu S, Yue T, Ahmad MJ, Hu X, Zhang X, Deng T, Hu Y, He C, Zhou Y, Yang L. Transcriptome Analysis Reveals Potential Regulatory Genes Related to Heat Tolerance in Holstein Dairy Cattle. Genes (Basel) 2020; 11:genes11010068. [PMID: 31936116 PMCID: PMC7017222 DOI: 10.3390/genes11010068] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/24/2019] [Accepted: 01/03/2020] [Indexed: 01/08/2023] Open
Abstract
Heat stress affects the physiology and production performance of Chinese Holstein dairy cows. As such, the selection of heat tolerance in cows and elucidating its underlying mechanisms are vital to the dairy industry. This study aimed to investigate the heat tolerance associated genes and molecular mechanisms in Chinese Holstein dairy cows using a high-throughput sequencing approach and bioinformatics analysis. Heat-induced physiological indicators and milk yield changes were assessed to determine heat tolerance levels in Chinese Holstein dairy cows by Principal Component Analysis method following Membership Function Value Analysis. Results indicated that rectal temperature (RT), respiratory rate (RR), and decline in milk production were significantly lower (p < 0.05) in heat tolerant (HT) cows while plasma levels of heat shock protein (HSP: HSP70, HSP90), and cortisol were significantly higher (p < 0.05) when compared to non-heat tolerant (NHT) Chinese Holstein dairy cows. By applying RNA-Seq analysis, we identified 200 (81 down-regulated and 119 up-regulated) significantly (|log2fold change| ≥ 1.4 and p ≤ 0.05) differentially expressed genes (DEGs) in HT versus NHT Chinese Holstein dairy cows. In addition, 14 of which were involved in protein–protein interaction (PPI) network. Importantly, several hub genes (OAS2, MX2, IFIT5 and TGFB2) were significantly enriched in immune effector process. These findings might be helpful to expedite the understanding for the mechanism of heat tolerance in Chinese Holstein dairy cows.
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Affiliation(s)
- Shenhe Liu
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China
| | - Tingting Yue
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Muhammad Jamil Ahmad
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Xiangwei Hu
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Xinxin Zhang
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Tingxian Deng
- Guangxi Provincial Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China;
| | - Yan Hu
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Changjiu He
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Yang Zhou
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
| | - Liguo Yang
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (S.L.); (T.Y.); (M.J.A.); (X.H.); (X.Z.); (Y.H.); (C.H.); (Y.Z.)
- Correspondence:
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Sammad A, Umer S, Shi R, Zhu H, Zhao X, Wang Y. Dairy cow reproduction under the influence of heat stress. J Anim Physiol Anim Nutr (Berl) 2019; 104:978-986. [PMID: 31782564 DOI: 10.1111/jpn.13257] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/23/2019] [Accepted: 11/04/2019] [Indexed: 12/20/2022]
Abstract
Dairy farming is vulnerable to global warming and climate change. Improving and maintaining conception rates (CRs) have a paramount importance for the profitability of any dairy enterprise. There is an antagonistic relationship between fertility and milk yield, and intensive selection for milk yield has severely deteriorated reproductive efficiency. Irrespective of geography and husbandry, modern dairy cows experience heat stress (HS) effects leading to fertility declines, but it worsens in tropical climates. The threshold of HS experience among modern dairy cow has lowered, leading to decreased thermal comfort zone. Studies show that this threshold is lower for fertility than for lactation. HS abatement and robustness response to lactation yield lead to negative energy balance, and cow's reproductive requirements remain unfulfilled. The adverse effects of HS commence from developing oocyte throughout later stages and its fertilization competence; the oestrus cycle and oestrus behaviour; the embryo development and implantation; on uterine environment; and even extend towards foetal calf. Even cows can become acyclic under the influence of HS. These harmful effects of HS arise due to hyperthermia, oxidative stress and physiological modifications in the body of dairy cows. Proper assessment of HS and efficient cooling of dairy animals irrespective of their stage of life at farm is the immediate strategy to reduce fertility declines. Other long- and short-term mitigation strategies to reduce fertility declines during HS include feeding care, reducing disease and mastitis rates, using semen from cooled bulls, timed artificial inseminations (AI), allied hormonal interventions and use of embryo transfer technology. Ultimate long-term solution should be well-planned breeding for fertility improvement and HS tolerance.
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Affiliation(s)
- Abdul Sammad
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing, China
| | - Saqib Umer
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rui Shi
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing, China
| | - Huabin Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xueming Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yachun Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing, China
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Liu S, Ye T, Li Z, Li J, Jamil AM, Zhou Y, Hua G, Liang A, Deng T, Yang L. Identifying Hub Genes for Heat Tolerance in Water Buffalo ( Bubalus bubalis) Using Transcriptome Data. Front Genet 2019; 10:209. [PMID: 30918514 PMCID: PMC6424900 DOI: 10.3389/fgene.2019.00209] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 02/26/2019] [Indexed: 12/25/2022] Open
Abstract
Heat stress has a detrimental effect on the physiological and production performance of buffaloes. Elucidating the underlying mechanisms of heat stress is challenging, therefore identifying candidate genes is urgent and necessary. We evaluated the response of buffaloes (n = 30) to heat stress using the physiological parameters, ELISA indexes, and hematological parameters. We then performed mRNA and microRNA (miRNA) expression profiles analysis between heat tolerant (HT, n = 4) and non-heat tolerant (NHT, n = 4) buffaloes, as well as the specific modules, significant genes, and miRNAs related to the heat tolerance identified using the weighted gene co-expression network analysis (WGCNA). The results indicated that the buffaloes in HT had a significantly lower rectal temperature (RT) and respiratory rate (RR) and displayed a higher plasma heat shock protein (HSP70 and HSP90) and cortisol (COR) levels than those of NHT buffaloes. Differentially expressed analysis revealed a total of 753 differentially expressed genes (DEGs) and 16 differentially expressed miRNAs (DEmiRNAs) were identified between HT and NHT. Using the WGCNA analysis, these DEGs assigned into 5 modules, 4 of which were significantly correlation with the heat stress indexes. Interestingly, 158 DEGs associated with heat tolerance in the turquoise module were identified, 35 of which were found within the protein-protein interaction network. Several hub genes (IL18RAP, IL6R, CCR1, PPBP, IL1B, and IL1R1) were identified that significantly enriched in the Cytokine-cytokine receptor interaction. The findings may help further elucidate the underlying mechanisms of heat tolerance in buffaloes.
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Affiliation(s)
- Shenhe Liu
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tingzhu Ye
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zipeng Li
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jun Li
- Department of Immunology, Zunyi Medical College, Zunyi, China
| | - Ahmad Muhammad Jamil
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yang Zhou
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guohua Hua
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Aixin Liang
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tingxian Deng
- Guangxi Provincial Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Liguo Yang
- Ministry of Education, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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Shenhe L, Jun L, Zipeng L, Tingxian D, Rehman ZU, Zichao Z, Liguo Y. Effect of season and breed on physiological and blood parameters in buffaloes. J DAIRY RES 2018; 85:181-4. [PMID: 29785917 DOI: 10.1017/S0022029918000286] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this Research Communication we describe the effect of temperature and humidity index (THI) on various physiological traits, the plasma heat shock protein 70 (HSP70), heat shock protein 90 (HSP90) and cortisol levels and other blood parameters in crossbred buffalo (Nili-Ravi × Murrah) and Mediterranean buffalo to compare their tolerance to heat stress. As expected, crossbred buffalo had a significantly higher rectal temperature (RT), body surface temperature (BT), respiratory rate (RR), HSP70 and HSP90 levels in summer compared to spring and winter. RT and BT were also significantly higher in spring compared to winter. A significant correlation existed between THI and RT (r = 0·81) and RR (r = 0·84). Importantly, in summer the crossbred buffalo had a significantly lower RT, BT and RR and higher HSP70, HSP90 and cortisol levels than the Mediterranean buffalo. In conclusion, higher THI was associated with significant increase in RT, RR, BT, HSP70, HSP90 and cortisol levels, and the crossbred buffalo were more heat tolerant than Mediterranean buffalo.
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Zeng L, Chen N, Ning Q, Yao Y, Chen H, Dang R, Zhang H, Lei C. PRLH
and SOD1
gene variations associated with heat tolerance in Chinese cattle. Anim Genet 2018; 49:447-451. [DOI: 10.1111/age.12702] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2018] [Indexed: 12/14/2022]
Affiliation(s)
- L. Zeng
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - N. Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Q. Ning
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Y. Yao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - H. Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - R. Dang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - H. Zhang
- Key Laboratory of Plateau Lake Ecology and Environment Change; Institute of Plateau Lake Ecology and Pollution Management; School of Resource Environment and Earth Science; Yunnan University; Chenggong, Kunming, Yunnan 650504 China
| | - C. Lei
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
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Pryce JE, Nguyen TTT, Axford M, Nieuwhof G, Shaffer M. Symposium review: Building a better cow-The Australian experience and future perspectives. J Dairy Sci 2018; 101:3702-3713. [PMID: 29454697 DOI: 10.3168/jds.2017-13377] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 12/14/2017] [Indexed: 12/16/2022]
Abstract
Genomic selection has led to opportunities for developing new breeding values that rely on phenotypes in dedicated reference populations of genotyped cows. In Australia, it has been applied to 2 novel traits: feed efficiency, which was released in 2015 as feed saved breeding values, and heat tolerance genomic breeding values, released for the first time in 2017. Feed saved is already included in the national breeding objective, which is focused on profitability and designed to be in line with farmer preferences. Our future focus is on traits associated with animal health, either directly or in combination with predictor traits, such as mid-infrared spectral data and, into the future, automated data capture. Although it is common for many evaluated traits to have genomic reliabilities ranging between 60 and 75%, many new, genomic information-only traits are likely to have reliabilities of less than 50%. Pooling of phenotype data internationally and investing in maintenance of reference populations is one option to increase the reliability of these traits; the other is to apply improved genomic prediction methods. For example, advances in the use of sequence data, in addition to gene expression studies, can lead to improved persistence of genomic breeding values across breeds and generations and potentially lead to greater reliabilities. Lower genomic reliabilities of novel traits could reduce the overall index reliability. However, provided these traits contribute to the overall breeding objective (e.g., profit), they are worth including. Bull selection tools and personalized genetic trends are already available, but increased access to economic and automatic capture farm data may see even better use of data to improve farm management and selection decisions.
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Affiliation(s)
- J E Pryce
- Agriculture Victoria, AgriBio, Centre for AgriBioscience, Bundoora, Victoria 3083, Australia; School of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia.
| | - T T T Nguyen
- Agriculture Victoria, AgriBio, Centre for AgriBioscience, Bundoora, Victoria 3083, Australia
| | - M Axford
- DataGene Ltd., Bundoora, Victoria 3083, Australia
| | - G Nieuwhof
- Agriculture Victoria, AgriBio, Centre for AgriBioscience, Bundoora, Victoria 3083, Australia; DataGene Ltd., Bundoora, Victoria 3083, Australia
| | - M Shaffer
- DataGene Ltd., Bundoora, Victoria 3083, Australia
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