Phenotypic plasticity of composite beef cattle performance using reaction norms model with unknown covariate

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dc.contributor.authorSantana, M. L.
dc.contributor.authorEler, J. P.
dc.contributor.authorCardoso, F. F.
dc.contributor.authorAlbuquerque, L. G. [UNESP]
dc.contributor.authorFerraz, J. B S
dc.contributor.institutionUniversidade Federal de Mato Grosso
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:28:18Z
dc.date.available2014-05-27T11:28:18Z
dc.date.issued2013-02-01
dc.description.abstractThe objective of the present study was to determine the presence of genotype by environment interaction (G × E) and to characterize the phenotypic plasticity of birth weight (BW), weaning weight (WW), postweaning weight gain (PWG) and yearling scrotal circumference (SC) in composite beef cattle using the reaction norms model with unknown covariate. The animals were born between 1995 and 2008 on 33 farms located throughout all Brazilian biomes between latitude -7 and -31, longitude -40 and -63. The contemporary group was chosen as the environmental descriptor, that is, the environmental covariate of the reaction norms. In general, higher estimates of direct heritability were observed in extreme favorable environments. The mean of direct heritability across the environmental gradient ranged from 0.05 to 0.51, 0.09 to 0.43, 0.01 to 0.43 and from 0.12 to 0.26 for BW, WW, PWG and SC, respectively. The variation in direct heritability observed indicates a different response to selection according to the environment in which the animals of the population are evaluated. The correlation between the level and slope of the reaction norm for BW and PWG was high, indicating that animals with higher average breeding values responded better to improvement in environmental conditions, a fact characterizing a scale of G × E. Low correlation between the intercept and slope was obtained for WW and SC, implying re-ranking of animals in different environments. Genetic variation exists in the sensitivity of animals to the environment, a fact that permits the selection of more plastic or robust genotypes in the population studied. Thus, the G × E is an important factor that should be considered in the genetic evaluation of the present population of composite beef cattle. © The Animal Consortium 2012.en
dc.description.affiliationGrupo de Melhoramento Animal de Mato Grosso Instituto de Ciências Agrárias e Tecnológicas Universidade Federal de Mato Grosso, MT-270, Km 06, CEP 78735-901, Rondonópolis, MT
dc.description.affiliationGrupo de Melhoramento Animal e Biotecnologia Faculdade de Zootecnia e Engenharia de Alimentos Universidade de São Paulo, C. Postal 23, CEP 13635-970, Pirassununga, SP
dc.description.affiliationEmbrapa Pecuária Sul, BR 153 - Km 603, C. Postal 242, CEP 96401-970, Bagé, RS
dc.description.affiliationFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, CEP 14884-900, Jaboticabal, SP
dc.description.affiliationUnespFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, CEP 14884-900, Jaboticabal, SP
dc.format.extent202-210
dc.identifierhttp://dx.doi.org/10.1017/S1751731112001711
dc.identifier.citationAnimal, v. 7, n. 2, p. 202-210, 2013.
dc.identifier.doi10.1017/S1751731112001711
dc.identifier.file2-s2.0-84872090343.pdf
dc.identifier.issn1751-7311
dc.identifier.issn1751-732X
dc.identifier.scopus2-s2.0-84872090343
dc.identifier.urihttp://hdl.handle.net/11449/74489
dc.identifier.wosWOS:000313218900003
dc.language.isoeng
dc.relation.ispartofAnimal
dc.relation.ispartofjcr1.870
dc.relation.ispartofsjr0,842
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectcomposite beef cattle
dc.subjectgenetic parameters
dc.subjectgenotype by environment interaction
dc.subjectgrowth
dc.subjectreaction norms
dc.subjectanimal
dc.subjectanimal husbandry
dc.subjectbiological model
dc.subjectbirth weight
dc.subjectBrazil
dc.subjectbreeding
dc.subjectcattle
dc.subjectfemale
dc.subjectgenetics
dc.subjectgenotype environment interaction
dc.subjectgrowth, development and aging
dc.subjectmale
dc.subjectscrotum
dc.subjectweaning
dc.subjectweight gain
dc.subjectAnimal Husbandry
dc.subjectAnimals
dc.subjectBirth Weight
dc.subjectBreeding
dc.subjectCattle
dc.subjectFemale
dc.subjectGene-Environment Interaction
dc.subjectMale
dc.subjectModels, Genetic
dc.subjectScrotum
dc.subjectWeaning
dc.subjectWeight Gain
dc.subjectAnimalia
dc.subjectBos
dc.titlePhenotypic plasticity of composite beef cattle performance using reaction norms model with unknown covariateen
dc.typeArtigo
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676
unesp.author.orcid0000-0002-2030-7590[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentZootecnia - FCAVpt

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