Negative energy balance of dairy cows: Association with behavior and minimizing risk

dc.contributor.advisorDeVries, Trevor
dc.contributor.authorMoore, Sydney of Animal Biosciencesen_US Centre for the Study of Animal Welfareen_US of Guelphen_US of Scienceen_US and Poultry Scienceen_US
dc.description.abstractThe 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.sponsorshipNatural Sciences and Engineering Research Council of Canada - Discovery Grant
dc.description.sponsorshipCanadian Foundation for Innovation
dc.description.sponsorshipOntario Research FundNatural Sciences and Engineering Research Council of CanadaCollaborative Research and Development Grant with Liquid Feeds International
dc.description.sponsorshipQuality Liquid Feeds
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectearly lactation dairy cowsen_US
dc.subjectautomated milking systemsen_US
dc.subjectfeeding behavioren_US
dc.subjectfeed sortingen_US
dc.subjectnegative energy balanceen_US
dc.titleNegative energy balance of dairy cows: Association with behavior and minimizing risken_US


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