Nesting behaviour and floor egg incidence in broiler breeders: Effects of light type, nest-box illumination and feeding time

dc.contributor.advisorDuncan, Ian J.H.
dc.contributor.authorSheppard, Kimberly C.
dc.date.accessioned2021-07-21T14:16:44Z
dc.date.available2021-07-21T14:16:44Z
dc.date.copyright2003
dc.degree.departmentDepartment of Animal and Poultry Scienceen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractBroiler breeders sometimes lay eggs on the floor rather than in nest-boxes. Floor eggs cause unacceptable financial losses for producers. One explanation for floor eggs is that nest-boxes are too brightly illuminated. Another is that feeding nesting hens results in them leaving the nest-box, thereafter laying eggs on the floor. This thesis investigates the effects of shading nest-boxes from three light sources on subsequent nest-box usage, and whether feeding nesting hens results in more floor eggs. Hens in experiment 1 were assigned to one of three light treatments and given the choice of shaded or lit nest-boxes. Shaded nest-boxes were not used to a greater extent than lit, and there was no difference in floor eggs across light treatments. Hens in experiment 2 were fed while expressing advanced pre-laying behaviour. The majority of hens left the nest box to feed, but this did not result in higher floor egg numbers.
dc.identifier.urihttps://hdl.handle.net/10214/25989
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectbroiler breeders
dc.subjectnesting behaviour
dc.subjectfloor egg incidence
dc.subjectnest-box illumination
dc.subjectfeeding time
dc.titleNesting behaviour and floor egg incidence in broiler breeders: Effects of light type, nest-box illumination and feeding time
dc.typeThesisen_US

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