The Use of Probiotic and Synbiotic Supplements in Mice Models and Poultry: Effects on Behavioural Management

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dc.contributor.advisorHarlander, Alexandra
dc.contributor.authorHughes, Gillian
dc.date.accessioned2023-05-18T13:49:34Z
dc.date.copyrightMay-23
dc.date.created2023-04-28
dc.degree.departmentDepartment of Animal Biosciencesen_US
dc.degree.departmentCampbell Centre for the Study of Animal Welfareen_US
dc.degree.grantorUniversity of Guelphen
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeAnimal Biosciencesen_US
dc.description.abstractProbiotics influence mood and social behaviour and could help manage gentle and severe feather pecking (GFP and SFP) in laying hens. While GFP is considered beneficial, SFP damages feather cover over time. In previous research, single-strain Lactobacillus rhamnosus reduced SFP under stressed conditions, and increased GFP overall, and multi-strain synbiotics could reduce SFP while providing other benefits. This thesis aims to assess the effect of a synbiotic containing Lactobacillus and Bifidobacterium on GFP, SFP, productivity, and body condition in hens. We first conducted a meta-analysis of Bifidobacterium's impact on stress response in mice. The synbiotic was then evaluated by supplementing stressed and non-stressed hens over four weeks. While Bifidobacterium reduced anxiety-like behaviour in mice in response to stress, the synbiotic did not reduce SFP in hens regardless of stress treatment. The synbiotic did change GFP's relationship to stress, which could play a role in hen’s social behaviour and stress management.en_US
dc.description.embargo2024-05-17
dc.description.sponsorshipOntario Ministry of Agriculture, Food and Rural Affairs
dc.description.sponsorshipNatural Sciences and Engineering Research Council
dc.identifier.urihttps://hdl.handle.net/10214/27623
dc.language.isoenen_US
dc.publisherUniversity of Guelphen
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectmicrobiomeen_US
dc.subjectprobioticen_US
dc.subjectsynbioticen_US
dc.subjectpoultryen_US
dc.subjectbehaviouren_US
dc.subjectfeather peckingen_US
dc.subjectmeta-analysisen_US
dc.subjectmouseen_US
dc.subjectstress responseen_US
dc.subjectgut-brain axisen_US
dc.subjectlactobacillusen_US
dc.subjectbifidobacteriumen_US
dc.subjectsocial behaviouren_US
dc.titleThe Use of Probiotic and Synbiotic Supplements in Mice Models and Poultry: Effects on Behavioural Managementen_US
dc.typeThesisen
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