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- 2Random regression model
- 1Animal science
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- 1Beef cattle--Cow-calf system
- 1Bovine somatotropin
- 1Basarab, J. A.
- 1Carreira Bruinjé, Tony
- 1Clutton-Brock, T.H.
- 1Coltman, D.W.
- 1Engelking, Lauren E.
- 1Glimm, David R.
- 5Graduate and Postdoctoral Studies (GPS), Faculty of
- 5Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 1Biological Sciences, Department of
- 1Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 1Roy Berg Kinsella Research Ranch
- 1Roy Berg Kinsella Research Ranch/Journal Articles (Kinsella Ranch)
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2006
Wilson, A.J., Pemberton, J.M., Coltman, D.W., Kruuk, L.E.B., Pilkington, J.G., Mifsud, D.V., Clutton-Brock, T.H.
There has recently been great interest in applying theoretical quantitative genetic models to empirical studies of evolution in wild populations. However, while classical models assume environmental constancy, most natural populations exist in variable environments. Here, we applied a novel...
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Improving Accuracy of Genomic Prediction for Economically Important Traits in Canadian Holstein Dairy Cattle
DownloadSpring 2017
Milk is a valuable source of energy, high quality protein, and several key minerals and vitamins for humans. Selection for milk production in dairy cattle was first based on phenotype and pedigree information and the knowledge of genetic parameters for the trait of interest. However, substantial...
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Fall 2023
The calving transition is a challenging period for dairy cows characterized by negative energy balance, metabolic dysfunction, and inflammation, each of which may compromise milk production. Despite extensive research in this area, much is still unknown on how to best manage this period. The...
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Prediction of residual feed intake for first lactation dairy cows using orthogonal polynomial random regression
Download2013
Okine, E. K., Goonewardene, L. A., McFadden, T., Basarab, J. A., Wang, Z., Manafiazar, G., Li, P.
Residual Feed Intake (RFI) is a measure of energy efficiency. Developing an appropriate model to predict expected energy intake while accounting for multifunctional energy requirements of metabolic body weight (MBW), empty body weight (EBW), milk production energy requirements (MPER), and their...
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USING IN-LINE MILK PROGESTERONE DATA TO DETERMINE OVARIAN ACTIVITY PARAMETERS ASSOCIATED WITH REDUCED FERTILITY IN CANADIAN HOLSTEIN COWS
DownloadFall 2017
Improvements in genetic selection and dairy management practices have resulted in dramatic increases in individual milk production over past decades. However, this positive trend has been accompanied by decreased reproductive performance and fertility in dairy cows. Infertility in modern dairy...