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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
14/02/2011 |
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Data da última atualização: |
02/02/2026 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FARIA, C. U. de; PIRES, B. C.; ALEJANDRO VOZZI, P.; MAGNABOSCO, C. de U.; KOURY FILHO, W.; VIU, M. A. O.; OLIVEIRA, H. N. de; LÔBO, R. B. |
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Afiliação: |
CARINA UBIRAJARA DE FARIA, UNIVERSIDADE FEDERAL DE UBERLÂNDIA; BRUNO CARLOS PIRES, UNIVERSIDADE FEDERAL DE GOIÁS; PEDRO ALEJANDRO VOZZI, ASSOCIAÇÃO NACIONAL DE CRIADORES E PESQUISADORES; CLAUDIO DE ULHOA MAGNABOSCO, CPAC; WILLIAM KOURY FILHO, BRASILCOMZ ZOOTECNIA TROPICAL; UNIVERSIDADE FEDERAL DE GOIÁS; HENRIQUE NUNES DE OLIVEIRA, UNIVERSIDADE ESTADUAL PAULISTA; RAYSILDO BARBOSA LÔBO, ASSOCIAÇÃO NACIONAL DE CRIADORES E PESQUISADORES. |
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Título: |
Genetic correlations between categorical morphological traits in Nelore cattle by applying bayesian analysis under a threshold animal model. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 127, p. 377-384, 2010. |
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DOI: |
https://doi.org/10.1111/j.1439-0388.2010.00860.x |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, Bayesian analysis under a threshold animal model was used to estimate genetic correlations between morphological traits (body structure, finishing precocity and muscling) in Nelore cattle evaluated at weaning and yearling. Visual scores obtained from 7651 Nelore cattle at weaning and from 4155 animals at yearling, belonging to the Brazilian Nelore Program, were used. Genetic parameters for the morphological traits were estimated by two-trait Bayesian analysis under a threshold animal model. The genetic correlations between the morphological traits evaluated at two ages of the animal (weaning and yearling) were positive and high for body structure (0.91), finishing precocity (0.96) and muscling (0.94). These results indicate that the traits are mainly determined by the same set of genes of additive action and that direct selection at weaning will also result in genetic progress for the same traits at yearling. Thus, selection of the best genotypes during only one phase of life of the animal is suggested. However, genetic differences between morphological traits were better detected during the growth phase to yearling. Direct selection for body structure, finishing precocity and muscling at only one age, preferentially at yearling, is recommended as genetic differences between traits can be detected at this age. |
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Thesagro: |
Bovino; Gado Nelore; Genética. |
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Thesaurus Nal: |
Bayesian theory; Beef cattle. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02236naa a2200277 a 4500
001 1876948
005 2026-02-02
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/j.1439-0388.2010.00860.x$2DOI
100 1 $aFARIA, C. U. de
245 $aGenetic correlations between categorical morphological traits in Nelore cattle by applying bayesian analysis under a threshold animal model.$h[electronic resource]
260 $c2010
520 $aIn this study, Bayesian analysis under a threshold animal model was used to estimate genetic correlations between morphological traits (body structure, finishing precocity and muscling) in Nelore cattle evaluated at weaning and yearling. Visual scores obtained from 7651 Nelore cattle at weaning and from 4155 animals at yearling, belonging to the Brazilian Nelore Program, were used. Genetic parameters for the morphological traits were estimated by two-trait Bayesian analysis under a threshold animal model. The genetic correlations between the morphological traits evaluated at two ages of the animal (weaning and yearling) were positive and high for body structure (0.91), finishing precocity (0.96) and muscling (0.94). These results indicate that the traits are mainly determined by the same set of genes of additive action and that direct selection at weaning will also result in genetic progress for the same traits at yearling. Thus, selection of the best genotypes during only one phase of life of the animal is suggested. However, genetic differences between morphological traits were better detected during the growth phase to yearling. Direct selection for body structure, finishing precocity and muscling at only one age, preferentially at yearling, is recommended as genetic differences between traits can be detected at this age.
650 $aBayesian theory
650 $aBeef cattle
650 $aBovino
650 $aGado Nelore
650 $aGenética
700 1 $aPIRES, B. C.
700 1 $aALEJANDRO VOZZI, P.
700 1 $aMAGNABOSCO, C. de U.
700 1 $aKOURY FILHO, W.
700 1 $aVIU, M. A. O.
700 1 $aOLIVEIRA, H. N. de
700 1 $aLÔBO, R. B.
773 $tJournal of Animal Breeding and Genetics$gv. 127, p. 377-384, 2010.
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