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dc.contributor.authorAbeysinghe, Korala Watthe Gedara Nilakshi Dhanushka Kumari
dc.date.accessioned2019-09-06T16:39:22Z
dc.date.available2019-09-06T16:39:22Z
dc.identifier.urihttp://hdl.handle.net/10222/76391
dc.description.abstractIn this study, it was hypothesized that providing a photoperiod during incubation will positively affect the production performance of laying hens. In the current study 640 eggs from each of two laying hen lines, (Lohmann Lite and Lohmann Brown) were incubated in 8 incubators as eighty eggs from each hen line/incubator. Blue, red and white LED lights were installed in 2 incubators each and 2 were left in the dark. In each lighting treatment the photoperiod used was 12L:12D. Hatched female chicks (n=384) were housed in 64 cages at 6 birds/cage and were provided with two post-hatch light regimes (long-days and short-days). During the study, production performance was monitored. Out of the four lighting treatments, red light reduced the total hatching time, improved chick quality, post-hatch growth rate and egg production. In conclusion, introduction of red LED to hatching eggs during incubation was beneficial to increase the production performance.en_US
dc.language.isoenen_US
dc.subjectlayersen_US
dc.subjecthatch timeen_US
dc.subjectchick qualityen_US
dc.subjectpost-hatch performanceen_US
dc.subjectred LEDen_US
dc.titleADAPTATION TO THE PULLET-REARING ENVIRONMENT BY PROVIDING LIGHTING DURING EMBRYO DEVELOPMENTen_US
dc.date.defence2019-01-03
dc.contributor.departmentFaculty of Agricultureen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinern/aen_US
dc.contributor.graduate-coordinatorGordon Priceen_US
dc.contributor.thesis-readerDr. Miriam Gordonen_US
dc.contributor.thesis-readerDr. Nancy MacLeanen_US
dc.contributor.thesis-supervisorBruce Rathgebaren_US
dc.contributor.ethics-approvalReceiveden_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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