Search
Skip to Search Results- 27Beef cattle
- 8Residual feed intake
- 6Dairy cattle
- 6Feed efficiency
- 5Single nucleotide polymorphisms
- 4Carcass merit
- 20Graduate and Postdoctoral Studies (GPS), Faculty of
- 20Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 17Roy Berg Kinsella Research Ranch
- 17Roy Berg Kinsella Research Ranch/Journal Articles (Kinsella Ranch)
- 1Biological Sciences, Department of
- 1Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 2Wang, Zhiquan (Agricultural, Food and Nutritional Science)
- 1Ambrose, Divakar J (Department of Agricultural, Food and Nutritional Science)
- 1Beauchemin, Karen (Agriculture & Agri-Food Canada - Department of Agricultural, Food and Nutritional Science [Adj.])
- 1Debra J. Davidson (Resource Economics and Environmental Sociology)
- 1Dr. Erasmus K. Okine, Agricultural, Food and Nutritional Science, University of Alberta/ Dr. Tim A. McAllister, Agriculture and Agri-Food Canada, Lethbridge and Agricultural, Food and Nutritional Science, University of Alberta
- 1Graham, Plastow (Agricultural, Food, and Nutritional Science)
-
Fall 2016
Methane (CH4) is a greenhouse gas with an elevated global warming potential (GWP) equivalent to 28 times that of CO2. Also, production of enteric CH4 results in a 2 to 12% loss of the gross energy intake of cattle thus knowing the amount of CH4 released to the environment is important. The...
-
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...
-
Fall 2017
In ruminants, evidence is accumulating regarding the associations between rumen microbial taxonomic features and feed efficiency. However, to date, how rumen microbial functional features contribute to the variations in feed efficiency of beef cattle has not been well understood. Moreover,...
-
1983
Makarechian, M., Tennessen, T., Mathison, G. W., Price, M. A.
Fifty-three cross-bred bulls, aged 5–7 mo, were divided at random into a nonimplanted control group of 26 bulls and a treatment group of 27 bulls, which were each implanted with 36 mg of zeranol on the 1st, 81st, and 155th day of the experiment. They were fed a high energy diet ad libitum for 168...
-
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...
-
Variations in and relationships between reproductive performance and growth parameters in yearling beef bulls in single sire mating at pasture
Download1989
Makarechian, M., Farid, A., Berg, R. T., Price, M. A.
Yearling bull fertility, measured as pregnancy rate, percentage of calves born during the first 4 and 6 wk of calving and mean and median of calving date distribution, were studied in 109 single-sire breeding herds of two breed groups over a 10-yr period. The breed groups were Herefords bulls...
-
2011
Nalaila, S., Li, C., Moore, S. S., Stothard, P., Wang, Z.
Quantitative trait loci (QTL) mapped to large chromosomal regions have limited utility as DNA markers for marker-assisted selection (MAS) and are less informative as a reference for the identification of the underlying causative quantitative trait nucleotides (QTN). The objective of this study...
-
Fall 2010
A whole genome scan was conducted to identify and fine map QTL regions for ultrasound and carcass merit traits in beef cattle. A total of 465 steers and bulls, genotyped for 4592 SNPs, were analysed for 16 ultrasound and carcass merit traits using interval mapping, single marker regression and...