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 |
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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 |
dc.rights.license |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
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