The impact of flight feather loss and exercise involving inclines on the main flight muscles, keel bone health and aerial descent in domestic laying hens

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dc.contributor.advisorHarlander, Alexandra
dc.contributor.authorHong, Grace
dc.date.accessioned2023-05-12T16:21:33Z
dc.date.copyrightMay-23
dc.date.created2023-03-31
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.abstractDomestic chicken are bipedal birds that are capable of terrestrial and aerial locomotion. As flapping flight is energetically costly, chickens may use a combination of their hindlimbs and wings to locomote; however, little is known about the relationship between the keel bone, the flight muscles that anchor to it and the chickens’ ability to navigate their environment. Therefore, this thesis investigated the effects of feather loss (Chapter 2) and exercise using inclines on flight muscle architecture, keel bone fractures (Chapter 3) and flight kinematics (Chapter 4). Altogether, the results of this thesis address gaps in knowledge on flight muscle architecture in laying hens. Although exercise did not influence flight muscle properties and subsequently had little effect on keel fracture prevalence, it did benefit the hindlimbs, producing faster take-off velocities and allowed white-feathered birds to have slower accelerations, contributing to more efficient transitions to the air and safer landings.en_US
dc.description.embargoApr-24
dc.description.sponsorshipAgriculture and Agri-Food Canada
dc.description.sponsorshipOntario Ministry of Agriculture, Food and Rural Affairs
dc.description.sponsorshipCanada First Research Excellence Fund
dc.description.sponsorshipFood from Thought
dc.identifier.urihttps://hdl.handle.net/10214/27569
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.subjectPoultryen_US
dc.subjectExerciseen_US
dc.subjectMuscle physiologyen_US
dc.subjectKeel boneen_US
dc.subjectWelfareen_US
dc.subjectFlight kinematicsen_US
dc.titleThe impact of flight feather loss and exercise involving inclines on the main flight muscles, keel bone health and aerial descent in domestic laying hensen_US
dc.typeThesisen
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