Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds

Detalhes bibliográficos
Autor(a) principal: de Araújo, Ronyere Olegário
Data de Publicação: 2012
Outros Autores: Marcondes, Cintia Righetti, Everling, Dionéia Magda, Weber, Tomás, Lopes, Jader Silva, Garnero, Analía del Valle, Gunski, Ricardo José, Rorato, Paulo Roberto Nogara
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/12049
Resumo: The objective of this work was to estimate genetic parameters, and genetic and phenotypic trends of a Brangus breed population. Weight, scrotal circumference, and visual scores of conformation, precocity, musculature, and navel, adjusted to 550 days of age, were evaluated from records of 6,789 animals sired by 288 bulls and 5,949 dams, born between 1991 and 2001 in 49 farms located in the Center‑West, Southeast, and South regions of Brazil. To estimate parameters, correlations, and genetic trends, a six‑trait, linear‑threshold animal model was adopted. Direct heritability estimates were 0.39 and 0.27 for weight and scrotal circumference, respectively, and 0.22, 0.20, 0.23, and 0.33 for conformation, precocity, musculature, and navel, indicating considerable additive genetic variation, and that it is possible to obtain genetic gain by selection. Genetic correlations between weight and scrotal circumference with the scores of conformation, precocity, and musculature show the possibility of correlated responses. Genetic trends indicate great contribution of non‑genetic sources of variation in the evaluated traits, which leads to the necessity of improving environmental conditions, in order for the animals to fully express their genetic potential.
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spelling Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herdsAbordagem bayesiana multivariada para características de crescimento, fertilidade e escores visuais de rebanhos da raça BrangusGibbs sampling; morphological traits; threshold model; early finishing.amostragem de Gibbs; características morfológica; modelo de limiar; precocidade de acabamento.The objective of this work was to estimate genetic parameters, and genetic and phenotypic trends of a Brangus breed population. Weight, scrotal circumference, and visual scores of conformation, precocity, musculature, and navel, adjusted to 550 days of age, were evaluated from records of 6,789 animals sired by 288 bulls and 5,949 dams, born between 1991 and 2001 in 49 farms located in the Center‑West, Southeast, and South regions of Brazil. To estimate parameters, correlations, and genetic trends, a six‑trait, linear‑threshold animal model was adopted. Direct heritability estimates were 0.39 and 0.27 for weight and scrotal circumference, respectively, and 0.22, 0.20, 0.23, and 0.33 for conformation, precocity, musculature, and navel, indicating considerable additive genetic variation, and that it is possible to obtain genetic gain by selection. Genetic correlations between weight and scrotal circumference with the scores of conformation, precocity, and musculature show the possibility of correlated responses. Genetic trends indicate great contribution of non‑genetic sources of variation in the evaluated traits, which leads to the necessity of improving environmental conditions, in order for the animals to fully express their genetic potential.O objetivo deste trabalho foi estimar parâmetros genéticos e tendências genéticas e fenotípicas de uma população da raça Brangus. As características peso, circunferência escrotal e escores visuais de conformação, precocidade, musculatura e umbigo, padronizadas para 550 dias de idade, foram avaliadas a partir de 6.789 registros de animais nascidos de 288 touros e 5.949 vacas entre 1991 e 2001, em 49 fazendas localizadas nas regiões Centro‑Oeste, Sudeste e Sul do Brasil. Para a estimação dos parâmetros, das correlações e das tendências genéticas, foi adotado o modelo animal linear‑limiar hexacaracterística. As estimativas de herdabilidade direta foram de 0,39 e 0,27, para peso e circunferência escrotal, respectivamente, e de 0,22, 0,20, 0,23 e 0,33 para conformação, precocidade, musculatura e umbigo, o que indica considerável variação genética aditiva e que é possível obter ganho genético por meio da seleção. As correlações genéticas entre peso e circunferência escrotal com os escores de conformação, precocidade e musculatura mostram a possibilidade de resposta correlacionada. As tendências genéticas estimadas indicam grande contribuição de fontes de variação não genéticas para todas as características no período estudado, e apontam a necessidade de melhoria das condições ambientais, para que os animais expressem todo seu potencial genético.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirade Araújo, Ronyere OlegárioMarcondes, Cintia RighettiEverling, Dionéia MagdaWeber, TomásLopes, Jader SilvaGarnero, Analía del ValleGunski, Ricardo JoséRorato, Paulo Roberto Nogara2012-09-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12049Pesquisa Agropecuaria Brasileira; v.47, n.8, ago. 2012; 1077-1086Pesquisa Agropecuária Brasileira; v.47, n.8, ago. 2012; 1077-10861678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/12049/7636https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12049/7629info:eu-repo/semantics/openAccess2012-09-27T14:23:17Zoai:ojs.seer.sct.embrapa.br:article/12049Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-09-27T14:23:17Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
Abordagem bayesiana multivariada para características de crescimento, fertilidade e escores visuais de rebanhos da raça Brangus
title Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
spellingShingle Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
de Araújo, Ronyere Olegário
Gibbs sampling; morphological traits; threshold model; early finishing.
amostragem de Gibbs; características morfológica; modelo de limiar; precocidade de acabamento.
title_short Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
title_full Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
title_fullStr Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
title_full_unstemmed Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
title_sort Bayesian multivariate approach for growth, fertility and visual score traits of Brangus cattle herds
author de Araújo, Ronyere Olegário
author_facet de Araújo, Ronyere Olegário
Marcondes, Cintia Righetti
Everling, Dionéia Magda
Weber, Tomás
Lopes, Jader Silva
Garnero, Analía del Valle
Gunski, Ricardo José
Rorato, Paulo Roberto Nogara
author_role author
author2 Marcondes, Cintia Righetti
Everling, Dionéia Magda
Weber, Tomás
Lopes, Jader Silva
Garnero, Analía del Valle
Gunski, Ricardo José
Rorato, Paulo Roberto Nogara
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv de Araújo, Ronyere Olegário
Marcondes, Cintia Righetti
Everling, Dionéia Magda
Weber, Tomás
Lopes, Jader Silva
Garnero, Analía del Valle
Gunski, Ricardo José
Rorato, Paulo Roberto Nogara
dc.subject.por.fl_str_mv Gibbs sampling; morphological traits; threshold model; early finishing.
amostragem de Gibbs; características morfológica; modelo de limiar; precocidade de acabamento.
topic Gibbs sampling; morphological traits; threshold model; early finishing.
amostragem de Gibbs; características morfológica; modelo de limiar; precocidade de acabamento.
description The objective of this work was to estimate genetic parameters, and genetic and phenotypic trends of a Brangus breed population. Weight, scrotal circumference, and visual scores of conformation, precocity, musculature, and navel, adjusted to 550 days of age, were evaluated from records of 6,789 animals sired by 288 bulls and 5,949 dams, born between 1991 and 2001 in 49 farms located in the Center‑West, Southeast, and South regions of Brazil. To estimate parameters, correlations, and genetic trends, a six‑trait, linear‑threshold animal model was adopted. Direct heritability estimates were 0.39 and 0.27 for weight and scrotal circumference, respectively, and 0.22, 0.20, 0.23, and 0.33 for conformation, precocity, musculature, and navel, indicating considerable additive genetic variation, and that it is possible to obtain genetic gain by selection. Genetic correlations between weight and scrotal circumference with the scores of conformation, precocity, and musculature show the possibility of correlated responses. Genetic trends indicate great contribution of non‑genetic sources of variation in the evaluated traits, which leads to the necessity of improving environmental conditions, in order for the animals to fully express their genetic potential.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-25
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/12049
url https://seer.sct.embrapa.br/index.php/pab/article/view/12049
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/12049/7636
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12049/7629
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.47, n.8, ago. 2012; 1077-1086
Pesquisa Agropecuária Brasileira; v.47, n.8, ago. 2012; 1077-1086
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
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institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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