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Blood and Urinary Metabotyping Reveals Potential Predictive Biomarkers for Identifying Dairy Cows at Risk of Subclinical Mastitis During the Dry-Off Period
DownloadFall 2021
Subclinical mastitis (SCM) remains one of the most important infectious diseases of dairy cows as it is associated with considerable losses in milk production and financial revenue. Currently, most SCM research and practices focus on diagnosing this intramammary infection (IMI) by counting...
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Fine scale mapping and association study of economically important traits on chromosomes 19 and 29 in beef and dairy cattle
DownloadFall 2009
The objective of this thesis was to construct radiation hybrid (RH) maps and estimate linkage disequilibrium (LD) using high density SNP markers on chromosomes 19 (BTA19) and 29 (BTA29) and use these as a tool to detect QTL in dairy and beef cattle. We have constructed RH maps of BTA19 and BTA29...
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Greenhouse gas emissions and the technical efficiency of Alberta dairy farms: What are the trade-offs?
DownloadFall 2018
The dairy sector is a significant contributor to Canada's economy and the Canadian diet; however, the associated carbon footprint comprises a large portion of agricultural emissions. Anthropogenic greenhouse gas (GHG) emissions are widely accepted as a key contributor to climate change, which is...
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Physiological Effects of Feeding High vs Low Levels of Milk Replacer and Starch to Holstein Dairy Calves During the Weaning Transition
DownloadFall 2022
Current calf nutrition programs revolve around two central themes: liquid feed, to provide early nutritional needs for the calf, and calf starter, to provide the stimuli for rumen development to prepare the calf for weaning. It is currently unclear how milk provision and calf starter starch...
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Relationship of high somatic cell counts in the milk prior to dry off with the incidence of periparturient diseases and milk yield in holstein dairy cows
DownloadFall 2018
Intramammary infections of dairy cows are characterized by elevation of milk somatic cell counts (SCC), which are mostly neutrophils. Infections can result in substantial production losses, increased costs for treatments, and veterinary services, besides discarding the antibiotic-treated milk and...
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The effects of supplementation of a Saccharomyces cerevisiae fermentation product and reducing dietary starch content after calving on the immune response and nutrient digestibility in transition dairy cows
DownloadFall 2018
The transition period is a challenging time for dairy cows because they experience reduced immune system function, increased risk of sub-acute rumen acidosis, and inflammation. The combination of these can lead to increased susceptibility to disease and reduced productivity. Additionally,...