Genetic parameters for body weight, carcass chemical composition and yield in a broiler-layer cross developed for QTL mapping

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dc.contributor.authorNunes, Beatriz do Nascimento [UNESP]
dc.contributor.authorRamos, Salvador Boccaletti [UNESP]
dc.contributor.authorSavegnago, Rodrigo Pelicioni [UNESP]
dc.contributor.authorLedur, Mônica Corrêa
dc.contributor.authorNones, Kátia
dc.contributor.authorKlein, Claudete Hara [UNESP]
dc.contributor.authorMunari, Danísio Prado [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:13:53Z
dc.date.available2014-05-20T13:13:53Z
dc.date.issued2011-01-01
dc.description.abstractThe objective of this study was to estimate genetic and phenotypic correlations of body weight at 6 weeks of age (BW6), as well as final carcass yield, and moisture, protein, fat and ash contents, using data from 3,422 F2 chickens originated from reciprocal cross between a broiler and a layer line. Variance components were estimated by the REML method, using animal models for evaluating random additive genetic and fixed contemporary group (sex, hatch and genetic group) effects. The heritability estimates (h²) for BW6, carcass yield and percentage of carcass moisture were 0.31 ± 0.07, 0.20 ± 0.05 and 0.33 ± 0.07, respectively. The h² for the percentages of protein, fat and ash on a dry matter basis were 0.48 ± 0.09, 0.55 ± 0.10 and 0.36 ± 0.08, respectively. BW6 had a positive genetic correlation with fat percentage in the carcass, but a negative one with protein and ash contents. Carcass yield, thus, appears to have only low genetic association with carcass composition traits. The genetic correlations observed between traits, measured on a dry matter basis, indicated that selection for carcass protein content may favor higher ash content and a lower percentage of carcass fat.en
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Ciências Exatas
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária Suínos e Aves
dc.description.affiliationEscola Superior de Agricultura Laboratório de Biotecnologia Animal
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Ciências Exatas
dc.description.sponsorshipEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent429-434
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572011005000019
dc.identifier.citationGenetics and Molecular Biology. Sociedade Brasileira de Genética, v. 34, n. 3, p. 429-434, 2011.
dc.identifier.doi10.1590/S1415-47572011005000019
dc.identifier.fileS1415-47572011000300011.pdf
dc.identifier.issn1415-4757
dc.identifier.lattes6064277731903249
dc.identifier.scieloS1415-47572011000300011
dc.identifier.urihttp://hdl.handle.net/11449/1522
dc.identifier.wosWOS:000293968100011
dc.language.isoeng
dc.publisherSociedade Brasileira de Genética
dc.relation.ispartofGenetics and Molecular Biology
dc.relation.ispartofjcr1.493
dc.relation.ispartofsjr0,638
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectBroileren
dc.subjectcarcass compositionen
dc.subjectGenetic correlationen
dc.titleGenetic parameters for body weight, carcass chemical composition and yield in a broiler-layer cross developed for QTL mappingen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/gmb/iaboutj.htm
dcterms.rightsHolderSoc Brasil Genetica
unesp.author.lattes6064277731903249
unesp.author.orcid0000-0001-6915-038X[7]
unesp.author.orcid0000-0002-2645-4735[4]
unesp.author.orcid0000-0001-5422-1309[2]
unesp.author.orcid0000-0002-6551-2168[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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