Análise Genética de Características Reprodutivas Na Raça Brahman

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dc.contributor.authorFaria, L. C.
dc.contributor.authorQueiroz, S. A. [UNESP]
dc.contributor.authorLôbo, R. B.
dc.contributor.authorBuzanskas, M. E. [UNESP]
dc.contributor.authorVenturini, G. C. [UNESP]
dc.contributor.authorMunari, D. P. [UNESP]
dc.contributor.authorE Oliveira, J. A. [UNESP]
dc.contributor.institutionAssociação dos Criadores de Brahman do Brasil
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAssociação Nacional de Criadores e Pesquisadores
dc.date.accessioned2014-05-27T11:27:21Z
dc.date.available2014-05-27T11:27:21Z
dc.date.issued2012-12-01
dc.description.abstractAiming to establish selection criteria for the Brahman cattle in Brazil, the objective of this paper was to estimate genetic and environmental parameters for birth weight (BW), gestation length (GL) and scrotal circumference at 365 (SC365), 455 (SC455) and 550 (SC 550) days of age, and relative efficiency of indirect versus direct selection for these traits. Data were obtained from 15 851 animals belonging to 16 herds in six states, enrolled in a genetic breeding program. (Co)variance and heritability coefficients and genetic and environmental correlations between traits were estimated by restricted maximum likelihood (REML) under a multi trait animal model. The model included as fixed effects the contemporary group and the age of cow at calving as a covariate (linear and quadratic), and as random the direct genetic, the permanent environmental and residual effects. For BW and GL it was also considered the maternal genetic effect as random. Estimates of direct heritabilities were 0.36, 0.29, 0.55, 0.43 and 0.40 for BW, GL, SC365, SC455 and SC550, respectively. Genetic correlations between BW and GL, GL and SC365, GL and SC455, GL and SC550, SC365 and SC455, SC365 and SC550 and SC455 and SC550, were respectively 0.06, 0.13, 0.20, 0.13, 0.96, 0.98 and 0.99. The heritabilities estimates for all traits indicated these show enough additive genetic variability to respond favorably to selection. For sexual precocity, the best option would be SC365, due to the high value of heritability and to indirect selection at this age being more efficient than direct selection for PE455.en
dc.description.affiliationAssociação dos Criadores de Brahman do Brasil, Uberaba, MG
dc.description.affiliationUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias (FCAV), Jaboticabal, SP
dc.description.affiliationAssociação Nacional de Criadores e Pesquisadores, Ribeirão Preto, SP
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias (FCAV), Jaboticabal, SP
dc.format.extent559-567
dc.identifierhttp://dx.doi.org/10.4321/S0004-05922012000400008
dc.identifier.citationArchivos de Zootecnia, v. 61, n. 236, p. 559-567, 2012.
dc.identifier.doi10.4321/S0004-05922012000400008
dc.identifier.fileS0004-05922012000400008.pdf
dc.identifier.issn0004-0592
dc.identifier.issn1885-4494
dc.identifier.lattes9096087557977610
dc.identifier.lattes6064277731903249
dc.identifier.scieloS0004-05922012000400008
dc.identifier.scopus2-s2.0-84871677252
dc.identifier.urihttp://hdl.handle.net/11449/73908
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofArchivos de Zootecnia
dc.relation.ispartofsjr0,202
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBirth weight
dc.subjectGenetic parameters
dc.subjectGestation length
dc.subjectRelative efficiency of selection
dc.subjectScrotal circumference
dc.subjectAnimalia
dc.subjectBos
dc.titleAnálise Genética de Características Reprodutivas Na Raça Brahmanpt
dc.title.alternativeGenetic analysis of reproductive traits in brahman cattleen
dc.typeArtigo
dcterms.licensehttp://scielo.isciii.es/revistas/azoo/paboutj.htm#Copyright
unesp.author.lattes9096087557977610
unesp.author.lattes6064277731903249
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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