Effects of various male feeding regimens on reproduction in broiler breeders

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dc.contributor.authorFontana, Eddy Alejandroen
dc.contributor.committeechairWeaver, William D. Jr.en
dc.contributor.committeememberVan Krey, H. P.en
dc.contributor.committeememberBeane, W. L.en
dc.contributor.committeememberWolford, John H.en
dc.contributor.departmentPoultry Scienceen
dc.date.accessioned2014-03-14T21:40:32Zen
dc.date.adate2010-07-15en
dc.date.available2014-03-14T21:40:32Zen
dc.date.issued1988-07-15en
dc.date.rdate2010-07-15en
dc.date.sdate2010-07-15en
dc.description.abstractA study was conducted using commercial broiler breeders with the males fed a diet containing, either 120/0 or 140/0 protein and body weight maintained at either 900/0 or 1000/0 of that recommended by the primary breeder (fed separately), or allowed to eat from the female feeders (controls). Female feeders in the separately fed pens were equipped with especially designed grills, which denied access to the males. The male feeder in these pens was elevated so that females were denied access. Males fed separately (body weight 90% or 1000/0, and dietary protein 120/0 or 140/0) had a significantly higher percentage fertility (4.20/0) than males allowed to eat with the females. No differences in percentage fertility were found among the four separately fed groups. No differences were noted in percentage hatch of fertile eggs among any of the treatment groups. Males eating from the female feeders had significantly heavier body weights and testes weights at 65 weeks of age than breeder males in the separately fed, groups. Mean body weights were 3819g and 4773g at 35 weeks of age, and 4192g and 5443g at 65 weeks of age for males eating separately and eating with the females, respectively. Furthermore, males in the control group had significantly larger breast angle measurements when compared with the separately fed males. No differences were observed in foot scores and semen concentration among males in the various treatment groups.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 79 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-07152010-020300en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07152010-020300/en
dc.identifier.urihttp://hdl.handle.net/10919/43750en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1988.F676.pdfen
dc.relation.isformatofOCLC# 18679708en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1988.F676en
dc.subject.lcshBroilers (Chickens) -- Feeding and feedsen
dc.subject.lcshChickens -- Feeding and feedsen
dc.subject.lcshPoultry -- Feeding and feedsen
dc.titleEffects of various male feeding regimens on reproduction in broiler breedersen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplinePoultry Scienceen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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