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Estimates of genetic parameters for visual scores and their correlation with production and reproductive traits in Brahman cattle

dc.contributor.authorBertipaglia, Tássia Souza [UNESP]
dc.contributor.authorCarreño, Luis Orlando Duitama [UNESP]
dc.contributor.authorMachado, Carlos Henrique Cavallini
dc.contributor.authorAndrighetto, Cristiana [UNESP]
dc.contributor.authorFonseca, Ricardo da [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:12:00Z
dc.date.available2014-05-20T13:12:00Z
dc.date.issued2012-06-01
dc.description.abstractThe objective of this study was to evaluate the association of visual scores of body structure, precocity and muscularity with production (body weight at 18 months and average daily gain) and reproductive (scrotal circumference) traits in Brahman cattle in order to determine the possible use of these scores as selection criteria to improve carcass quality. Covariance components were estimated by the restricted maximum likelihood method using an animal model that included contemporary group as fixed effect. A total of 1,116 observations of body structure, precocity and muscularity were used. Heritability was 0.39, 043 and 0.40 for body structure, precocity and muscularity, respectively. The genetic correlations were 0.79 between body structure and precocity, 0.87 between body structure and muscularity, and 0.91 between precocity and muscularity. The genetic correlations between visual scores and body weight at 18 months were positive (0.77, 0.57 and 0.59 for body structure, precocity and muscularity, respectively). Similar genetic correlations were observed between average daily gain and visual scores (0.60, 0.57 and 0.48, respectively), whereas the genetic correlations between scrotal circumference and these scores were low (0.13, 0.02, and 0.13). The results indicate that visual scores can be used as selection criteria in Brahman breeding programs. Favorable correlated responses should be seen in average daily gain and body weight at 18 months. However, no correlated response is expected for scrotal circumference.en
dc.description.affiliationUNESP
dc.description.affiliationUNESP FCAV Programa de Pós-graduação em Genética e Melhoramento Animal
dc.description.affiliationUNESP Departamento de Zootecnia
dc.description.affiliationUnespUNESP
dc.description.affiliationUnespUNESP FCAV Programa de Pós-graduação em Genética e Melhoramento Animal
dc.description.affiliationUnespUNESP Departamento de Zootecnia
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1407-1411
dc.identifierhttp://dx.doi.org/10.1590/S1516-35982012000600013
dc.identifier.citationRevista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 6, p. 1407-1411, 2012.
dc.identifier.doi10.1590/S1516-35982012000600013
dc.identifier.fileS1516-35982012000600013.pdf
dc.identifier.issn1516-3598
dc.identifier.lattes0308352373545558
dc.identifier.lattes0601987075176706
dc.identifier.orcid0000-0002-1163-6296
dc.identifier.orcid0000-0001-6543-9696
dc.identifier.scieloS1516-35982012000600013
dc.identifier.urihttp://hdl.handle.net/11449/18
dc.identifier.wosWOS:000306570200013
dc.language.isoeng
dc.publisherSociedade Brasileira de Zootecnia
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.relation.ispartofsjr0,337
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectaverage daily gainen
dc.subjectbody weight at 18 monthsen
dc.subjectGenetic correlationen
dc.subjectHeritabilityen
dc.subjectscrotal circumferenceen
dc.titleEstimates of genetic parameters for visual scores and their correlation with production and reproductive traits in Brahman cattleen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbz/paboutj.htm
dspace.entity.typePublication
unesp.author.lattes0308352373545558[5]
unesp.author.lattes0601987075176706[4]
unesp.author.orcid0000-0002-1163-6296[5]
unesp.author.orcid0000-0001-6543-9696[4]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentZootecnia - FCAVpt

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