Genotype x environment interaction for weight at 365 days in Mediterranean buffaloes

dc.contributor.authorRodrigues, Fernando Barreto
dc.contributor.authorSouza Carneiro, Paulo Luiz
dc.contributor.authorRamos, Alcides de Amorim [UNESP]
dc.contributor.authorAmbrosini, Diego Pagung
dc.contributor.authorMendes Malhado, Carlos Henrique
dc.contributor.institutionInst Fed Norte Minas Gerais
dc.contributor.institutionUniv Estadual Sudoeste Bahia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.abstractThe objective of this work was to verify the presence of the genotypes x environments interaction (GxE) for weight at 365 days of age in the Mediterranean breed of buffaloes, using models of reaction norms through random regression. The standard animal model and the models of reaction norms were tested, and the hierarchical model reaction norm (MRN) was evaluated with one and two steps. The homoscedastic hierarchical model of reaction norms with one-step (HMRNHO1s) had the best fit, based on three criteria for comparison. The direct heritability estimates for this model ranged from 0.19 to 0.78, with environment improvement. Besides, direct breeding values (scale effect) changed for some breeders, which indicates the existence of GxE interaction. The Spearman correlations were high, both in the comparison between the standard animal model and MRN, as in the comparison between low, medium, and high management levels in HMRNHO1s. Therefore, although there is GxE interaction, the ranking of breeding animals is not significantly affected by the models. The majority of buffaloes is formed by animals with robust genotypes, which are less sensitive to environmental changes.en
dc.description.affiliationInst Fed Norte Minas Gerais, BR-39560000 Salinas, MG, Brazil
dc.description.affiliationUniv Estadual Sudoeste Bahia, Dept Ciencias Biol, BR-45206510 Jequie, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Prod Anim, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Prod Anim, BR-18618970 Botucatu, SP, Brazil
dc.identifier.citationPesquisa Agropecuaria Brasileira. Brasilia Df: Empresa Brasil Pesq Agropec, v. 50, n. 7, p. 615-621, 2015.
dc.publisherEmpresa Brasil Pesq Agropec
dc.relation.ispartofPesquisa Agropecuaria Brasileira
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectscale effect
dc.subjectenvironmental gradient
dc.subjecthierarchical model
dc.subjectreaction norms
dc.subjectrandom regression
dc.subjectbreeding value
dc.titleGenotype x environment interaction for weight at 365 days in Mediterranean buffaloesen
dcterms.rightsHolderEmpresa Brasil Pesq Agropec