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- 5Dairy cattle
- 1Beef cattle--Cow-calf system
- 1Bovine somatotropin
- 1Dairy cattle--Milk production
- 1Dairy farm
- 1Basarab, J. A.
- 1Carreira Bruinjé, Tony
- 1Glimm, David R.
- 1Goonewardene, L. A.
- 1Li, P.
- 1Manafiazar, G.
Prediction of residual feed intake for first lactation dairy cows using orthogonal polynomial random regressionDownload
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...
Improving Accuracy of Genomic Prediction for Economically Important Traits in Canadian Holstein Dairy CattleDownload
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...
USING IN-LINE MILK PROGESTERONE DATA TO DETERMINE OVARIAN ACTIVITY PARAMETERS ASSOCIATED WITH REDUCED FERTILITY IN CANADIAN HOLSTEIN COWSDownload
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...