Estimates of genetic parameters for stayability and their associations with traits of economic interest in Gir dairy cows

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dc.contributor.authorSilva, R. M. O. [UNESP]
dc.contributor.authorBoligon, A. A. [UNESP]
dc.contributor.authorFernandes, A. R.
dc.contributor.authorVercesi Filho, A. E.
dc.contributor.authorEl Faro, L.
dc.contributor.authorTonhati, H. [UNESP]
dc.contributor.authorAlbuquerque, L. G. [UNESP]
dc.contributor.authorFraga, A. B.
dc.contributor.institutionUniv Fed Alagoas
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAssoc Brasileira Gir Leiteiro
dc.contributor.institutionCtr Pesquisas Bovinos Corte
dc.date.accessioned2018-11-26T16:32:36Z
dc.date.available2018-11-26T16:32:36Z
dc.date.issued2016-01-01
dc.description.abstractThe objective of the present study was to estimate genetic parameters for stayability at 60 months of age (STAY60) and its association with first lactation cumulative milk yield (P305), age at first calving (AFC), and first calving interval (FCI), in order to adopt these traits as selection criteria for longevity in Gir dairy cattle. Records for 2770 cows born between 1982 and 2008 from six herds in the Brazilian states of Minas Gerais, Sao Paulo, and Paribia were analyzed. The (co) variance components were estimated by a Bayesian approach using bivariate animal models. The heritability estimates were 0.37 +/- 0.09, 0.23 +/- 0.04, 0.26 +/- 0.06, and 0.07 +/- 0.03 for STAY60, P305, AFC, and FCI, respectively. The genetic correlations of STAY60 with P305, AFC, and FCI were moderate to high, with values of 0.61 (0.17), -0.44 (0.23), and 0.88 (0.13), respectively. STAY60, P305, and AFC exhibited additive genetic variability, and these traits should be considered in selection indices. The indirect selection for longevity through the correlated responses of early-expression traits, such as milk production at first lactation, could be used to improve the ability of animals to remain in the herd.en
dc.description.affiliationUniv Fed Alagoas, Ctr Ciencias Agr, Rio Largo, AL, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, Brazil
dc.description.affiliationAssoc Brasileira Gir Leiteiro, Uberaba, MG, Brazil
dc.description.affiliationCtr Pesquisas Bovinos Corte, Inst Zootecnia, Sertaozinho, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent8
dc.identifierhttp://dx.doi.org/10.4238/gmr.15016958
dc.identifier.citationGenetics And Molecular Research. Ribeirao Preto: Funpec-editora, v. 15, n. 1, 8 p., 2016.
dc.identifier.doi10.4238/gmr.15016958
dc.identifier.issn1676-5680
dc.identifier.urihttp://hdl.handle.net/11449/161400
dc.identifier.wosWOS:000373880200010
dc.language.isoeng
dc.publisherFunpec-editora
dc.relation.ispartofGenetics And Molecular Research
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAge at first calving
dc.subjectGenetic parameter
dc.subjectLongevity
dc.subjectFirst calving interval
dc.titleEstimates of genetic parameters for stayability and their associations with traits of economic interest in Gir dairy cowsen
dc.typeArtigo
dcterms.rightsHolderFunpec-editora
unesp.departmentZootecnia - FCAVpt

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Jaboticabal - FCAV - Faculdade de Ciências Agrárias e Veterinárias