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NEGATIVE ENERGY BALANCE OF DAIRY COWS: ASSOCIATION WITH BEHAVIOR AND MINIMIZING RISK

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dc.contributor.advisor DeVries, Trevor
dc.contributor.author Moore, Sydney
dc.date.accessioned 2020-04-29T14:13:35Z
dc.date.available 2020-04-29T14:13:35Z
dc.date.copyright 2020-04
dc.date.created 2020-04-17
dc.date.issued 2020-04-29
dc.identifier.uri http://hdl.handle.net/10214/17884
dc.description.abstract The overall objective of my thesis research was to develop a further understanding of how negative energy balance (NEB) relates to the behavior of dairy cows and how to minimize the risk of NEB in early lactation. In a first study, where cows were diet-induced into a state of NEB, it was demonstrated that greater NEB was associated with greater selection for the more energy-dense components of the diet and against the longer-less energy dense fractions of the diet, especially when fed a diet that is easily sorted. In a second study, it was determined that the supplementation of a molasses-based liquid feed through an automated milking system to fresh cows had a tendency to improve cow metabolic health. Cows receiving the additional energy supplement demonstrated improved energy balance and lost less body condition across the first 60 days in milk. en_US
dc.description.sponsorship This research was financially supported by a Natural Sciences and Engineering Research Council of Canada (NSERC; Ottawa, ON, Canada) Discovery Grant. Further, equipment for this research was supported through contributions from the Canadian Foundation for Innovation (CFI; Ottawa, ON, Canada) and the Ontario Research Fund (Toronto, ON, Canada). This research was also financially supported by a Natural Sciences and Engineering Research Council of Canada (NSERC; Ottawa, ON, Canada) Collaborative Research and Development Grant with Liquid Feeds International (Innerkip, Ontario, Canada) and from Quality Liquid Feeds (Dodgeville, WI, USA). en_US
dc.language.iso en en_US
dc.subject early lactation dairy cows en_US
dc.subject ketosis en_US
dc.subject automated milking systems en_US
dc.subject feeding behavior en_US
dc.subject molasses en_US
dc.subject feed sorting en_US
dc.subject negative energy balance en_US
dc.title NEGATIVE ENERGY BALANCE OF DAIRY COWS: ASSOCIATION WITH BEHAVIOR AND MINIMIZING RISK en_US
dc.type Thesis en_US
dc.degree.programme Animal and Poultry Science en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Animal Biosciences en_US
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