Reaction norm models for the study of genotype × methionine + cystine level interaction in meat-type quail

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dc.creatorGabriela Canabrava Gouveia
dc.creatorFabiana Ferreira
dc.creatorLuiza Rodrigues Alves Abreu
dc.creatorVirgínia Mara Pereira Ribeiro
dc.creatorBrenda Monique Magalhães Rocha
dc.creatorFabio Luiz Buranelo Toral
dc.creatorMartinho de Almeida e Silva
dc.date.accessioned2023-02-10T12:22:59Z
dc.date.accessioned2025-09-09T00:29:09Z
dc.date.available2023-02-10T12:22:59Z
dc.date.issued2019-11
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.livsci.2019.09.016
dc.identifier.issn1878-0490
dc.identifier.urihttps://hdl.handle.net/1843/49852
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.rightsAcesso Restrito
dc.subjectAves domésticas - Criação
dc.subjectCodornas
dc.subjectGenética animal
dc.subjectMetionina
dc.subjectCistina
dc.subjectLegendre, Polinômios de
dc.titleReaction norm models for the study of genotype × methionine + cystine level interaction in meat-type quail
dc.typeArtigo de periódico
local.citation.epage63
local.citation.spage56
local.citation.volume229
local.description.resumoThe objective of this study was to use reaction norm models to study genotype × environment interactions of meat-type quails raised on different levels of digestible methionine + cystine. The weight gains of two meat-type quail strains (EV1 and EV2) were measured from 21 to 35 days of age. For EV1 strain the levels of digestible methionine + cystine were 0.60, 0.70, 0.80, 0.90 and 1.00%, for EV2 strain the levels were 0.61, 0.71, 0.81, 0.91 and 1.01%. Reaction norm models with Legendre polynomials (LP) varying from zero to four orders were tested, by using Bayesian methodology. The model of best fit was selected based on the criterions of Deviance Information and Posterior Model Probabilities (PMP). For the EV1 strain, the fourth-order LP model was the best fit for the weight gain description with different levels of digestible methionine + cystine for the mean trajectory, additive genetic effects and five classes of residual variance. For the EV2 strain, the first-order LP model was the best fit for the mean trajectory, fourth-order for additive genetic effects and five classes of residual variance. In both strains, genetic correlation estimates and reaction norm of the genotype in relation to dietary methionine + cystine indicated the existence of a genotype × dietary level of amino acids interaction. For EV1 strain, genetic correlations for weight gain in different levels of digestible methionine + cystine ranged from –0.98 to 0.84, while for EV2 strains these estimates varied from –0.98 to 0.94. Also, in general, for both strains the high density intervals of genetic correlations with 90% of samples included zero, indicating that genetic correlations between the weight gain in different levels of digestible methionine + cystine did not differed from zero. Furthermore, the reaction norms indicated that genotypes were not linearly related to tested dietary levels of amino acids. This absence of linearity implies that to verify the same response to selection in field that was predicted by the genetic evaluation, the nutritional levels used at the herds for selection candidates and their progenies must be the same.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S1871141318302828

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