Impact of a dietary citrus extract on the behavior and milk yield of lactating dairy cows following regrouping

dc.contributor.advisorDeVries, Trevor
dc.contributor.authorDe Padua Santos, Felipe
dc.date.accessioned2021-01-12T17:36:47Z
dc.date.available2021-01-12T17:36:47Z
dc.date.copyrightJan-21
dc.date.created2021-01-04
dc.degree.departmentDepartment of Animal Biosciencesen_US
dc.degree.departmentCampbell Centre for the Study of Animal Welfareen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeAnimal and Poultry Scienceen_US
dc.description.abstractThe objective of this study was to determine if feeding a citrus extract (CE; from Citrus sinensis) reduces the effect of regrouping on lactating dairy cows. Thirty-two cows were enrolled and housed in a tie-stall facility where they were fed a diet with 4 g/d of CE or not. Cows stayed for 7 d in the tie-stall facility, then moved to 1 of 2 free-stall pens (each containing 29 other cows) for 7 d. Primiparous cows fed CE had sustained rumination and lying time after regrouping and had greater feeding time, greater milk yield, lesser idle standing time, and initiated fewer aggressive interactions after regrouping compared to primiparous control cows. For multiparous cows there was little effect of CE on their response to regrouping. The results indicate that feeding a CE additive to mid-lactation primiparous dairy cows may have mitigated the negative effects of regrouping on behavior and milk yield.en_US
dc.description.sponsorshipPhode (Terssac, France)
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada - Discovery Grant
dc.description.sponsorshipOntario Agri-Food Innovation Alliance Research Program
dc.description.sponsorshipOntario Ministry of Agriculture, Food, and Rural Affairs
dc.description.sponsorshipCanadian Foundation for Innovation (CFI)
dc.description.sponsorshipOntario Research Fund
dc.identifier.urihttps://hdl.handle.net/10214/23739
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectCitrus extracten_US
dc.subjectSocial groupingen_US
dc.subjectBehavioren_US
dc.titleImpact of a dietary citrus extract on the behavior and milk yield of lactating dairy cows following regroupingen_US
dc.typeThesisen_US

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