Genetic parameters of racing performance traits of Quarter horses in Brazil

dc.contributor.authorVillela, LCV
dc.contributor.authorMota, MDS
dc.contributor.authorOliveira, H. N.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:40:10Z
dc.date.available2014-05-20T13:40:10Z
dc.date.issued2002-08-01
dc.description.abstractThe data used in the present study were recorded at the Jockey Club of Sorocaba for 5094 racing performance of 1350 Quarter Horses at the Paulista Race Track of Sorocaba, state of São Paulo, Brazil, from 1991 to 1997. The considered traits were time and final rank. The model used in analysis included random animal and permanent environmental effects, and race, sex, age and origin as fixed effects. The variance and covariance components were estimated by the restricted maximum likelihood for an animal model, using the derivative-free process method and the MTDFREML software. For the time, heritability was 0.17 (0.05), while estimate of repeatability 0.55 (0.05). The lower heritability for the final rank, 0.13 (0.04), indicate that this trait is not the most appropriate one for inclusion in programs of Quarter horse selection in Sorocaba racetrack. The repeatability estimate for rank was 0.44 (0.04) and the genetic correlation between this trait and time was 0.99.en
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho, Dept Anim Breeding & Nutr, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho, Dept Anim Breeding & Nutr, Botucatu, SP, Brazil
dc.format.extent229-234
dc.identifierhttp://dx.doi.org/10.1046/j.1439-0388.2002.00338.x
dc.identifier.citationJournal of Animal Breeding and Genetics. Berlin: Blackwell Verlag Gmbh, v. 119, n. 4, p. 229-234, 2002.
dc.identifier.doi10.1046/j.1439-0388.2002.00338.x
dc.identifier.issn0931-2668
dc.identifier.urihttp://hdl.handle.net/11449/13955
dc.identifier.wosWOS:000177464100004
dc.language.isoeng
dc.publisherBlackwell Verlag Gmbh
dc.relation.ispartofJournal of Animal Breeding and Genetics
dc.relation.ispartofjcr1.941
dc.relation.ispartofsjr0,804
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleGenetic parameters of racing performance traits of Quarter horses in Brazilen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderBlackwell Verlag Gmbh
unesp.author.orcid0000-0002-3181-1223[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt
unesp.departmentMelhoramento e Nutrição Animal - FMVZpt

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