Finishing precocity visual score and genetic associations with growth traits in Angus beef cattle

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dc.contributor.authorEverling, D. M.
dc.contributor.authorBresolin, T. [UNESP]
dc.contributor.authorRorato, P. R. N.
dc.contributor.authorAraujo, R. O.
dc.contributor.authorBoligon, A. A. [UNESP]
dc.contributor.authorWeber, T.
dc.contributor.authorDornelles, M. A.
dc.contributor.authorCampos, L. T.
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionAssoc Nacl Criadores Herd Book Collares
dc.date.accessioned2015-03-18T15:56:26Z
dc.date.available2015-03-18T15:56:26Z
dc.date.issued2014-01-01
dc.description.abstractFinishing precocity visual score selection was adopted to estimate the time from birth to reach slaughter age. This study estimated (co) variance components and genetic correlations for the finishing precocity score at weaning (WP) and yearling (YP) stages by using daily weight gain (BWG = from birth to weaning; WYG = from weaning to yearling) and speed of weight gain (BWR = from birth to weaning; WYR = from weaning to yearling) as support for a genetic evaluation program for Angus beef cattle. Genetic parameters were estimated using Bayesian inference, considering multi-trait analysis and assuming a nonlinear model for WP and YP and linear model for all other traits. Direct heritability estimates were 0.17 (WP), 0.19 (YP), 0.15 (BWG), 0.16 (WYG), 0.15 (BWR), and 0.16 (WYR). The genetic correlation between the finishing precocity score at two ages (weaning and yearling) was 0.61. Positive and moderate genetic correlations were obtained between WP and BWG (0.47) and WP and BWR (0.46). In contrast, negative and low genetic associations were estimated between WP and yearling growth traits (-0.16, WYG; -0.15, WYR). Genetic correlations between YP and other traits were positive 0.29 (BWG), 0.28 (BWR), 0.48 (WYG), and 0.47 (WYR). The selection response for the finishing precocity score at weaning and yearling ages would be low. Selection to increase WP and YP should result in favorable genetic changes in daily weight gains as a correlated response. Therefore, to obtain animals suited for beef cattle production systems, finishing precocity score and growth traits should be considered as selection criteria.en
dc.description.affiliationUniv Fed Santa Maria, Dept Zootecnia, BR-97119900 Santa Maria, RS, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, Jaboticabal, SP, Brazil
dc.description.affiliationUniv Brasilia, Programa Posgrad Ciencia Anim, Brasilia, DF, Brazil
dc.description.affiliationAssoc Nacl Criadores Herd Book Collares, Pelotas, RS, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent7757-7765
dc.identifierhttp://dx.doi.org/10.4238/2014.September.26.13
dc.identifier.citationGenetics And Molecular Research. Ribeirao Preto: Funpec-editora, v. 13, n. 3, p. 7757-7765, 2014.
dc.identifier.doi10.4238/2014.September.26.13
dc.identifier.fileWOS000343049600142.pdf
dc.identifier.issn1676-5680
dc.identifier.urihttp://hdl.handle.net/11449/117567
dc.identifier.wosWOS:000343049600142
dc.language.isoeng
dc.publisherFunpec-editora
dc.relation.ispartofGenetics And Molecular Research
dc.relation.ispartofsjr0,439
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectBeef cattleen
dc.subjectGibbs samplingen
dc.subjectMonte Carlo methoden
dc.subjectThreshold modelsen
dc.titleFinishing precocity visual score and genetic associations with growth traits in Angus beef cattleen
dc.typeArtigo
dcterms.rightsHolderFunpec-editora
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentZootecnia - FCAVpt

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