Hip height and its relationships with reproductive and growth traits in Nelore cattle
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
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/5600 |
Resumo: | The objective of this work was to determine factors that affect hip height at different ages, in Nelore cattle, and to estimate the heritability and the genetic correlation between this character and reproductive and growth traits. The analyzed traits were: hip height at weaning, hip height at post weaning, weight at weaning, weight at post weaning, scrotal circumference, and age at first calving. The analyzed factors were: year and month of birth, herd, sex, age of dam at calving, and calf age. The variance covariance components were estimate by the restrict maximum likelihood methodology using animal model. All effects were significant for hip height at different ages. The heritability estimates for direct genetic effects indicated that the growth and reproductive traits respond to selection, except for age at first calving. The genetic correlations between growth traits were positive and high, from 0.42 to 0.90, which indicates that they are mostly determined by the same group of genes with additive action. Due to the low magnitude of the estimated genetic correlations, from -0.14 to 0.16, the reproductive efficiency is little influenced by selection for hip height. |
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Hip height and its relationships with reproductive and growth traits in Nelore cattleAltura da garupa e sua associação com características reprodutivas e de crescimento na raça Nelorevariance components; genetic correlations; heritability; age of dam; age of calfcomponentes de variância; correlações genéticas; herdabilidade; idade da vaca; idade do bezerroThe objective of this work was to determine factors that affect hip height at different ages, in Nelore cattle, and to estimate the heritability and the genetic correlation between this character and reproductive and growth traits. The analyzed traits were: hip height at weaning, hip height at post weaning, weight at weaning, weight at post weaning, scrotal circumference, and age at first calving. The analyzed factors were: year and month of birth, herd, sex, age of dam at calving, and calf age. The variance covariance components were estimate by the restrict maximum likelihood methodology using animal model. All effects were significant for hip height at different ages. The heritability estimates for direct genetic effects indicated that the growth and reproductive traits respond to selection, except for age at first calving. The genetic correlations between growth traits were positive and high, from 0.42 to 0.90, which indicates that they are mostly determined by the same group of genes with additive action. Due to the low magnitude of the estimated genetic correlations, from -0.14 to 0.16, the reproductive efficiency is little influenced by selection for hip height.O objetivo deste trabalho foi determinar os fatores que afetam a altura da garupa em diferentes idades, em bovinos Nelore, e estimar a herdabilidade e as correlações genéticas entre esse caractere e as características reprodutivas e de crescimento. Os caracteres avaliados foram: altura da garupa à desmama, altura da garupa ao sobreano, peso à desmama, peso ao sobreano, perímetro escrotal e idade ao primeiro parto. Os fatores considerados foram: ano e mês de nascimento, rebanho, sexo, idade da vaca ao parto e idade do bezerro. Os componentes de variância e covariância foram estimados pela metodologia de máxima verossimilhança restrita, tendo-se utilizado um modelo animal. Todos os efeitos foram significativos para altura de garupa nas diferentes idades. As estimativas de herdabilidade quanto ao efeito genético direto indicaram que as características de crescimento e reprodutivas respondem à seleção, exceto a idade ao primeiro parto. As correlações genéticas entre as características de crescimento foram todas positivas e elevadas, de 0,42 a 0,90, o que indica que são determinadas em grande parte pelos mesmos conjuntos de genes de ação aditiva. Em razão das baixas magnitudes das estimativas de correlação genética (entre -0,14 e 0,16), a eficiência reprodutiva é pouco influenciada pela seleção quanto à altura de garupa.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPq e FapespPereira, Marcio CinachiYokoo, Marcos JunitiBignardi, Annaiza BragaSezana, Juliana Cristinade Albuquerque, Lucia Galvão2011-01-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5600Pesquisa Agropecuaria Brasileira; v.45, n.6, jun. 2010; 613-620Pesquisa Agropecuária Brasileira; v.45, n.6, jun. 2010; 613-6201678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5600/6043https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/5600/2995info:eu-repo/semantics/openAccess2014-10-17T19:42:32Zoai:ojs.seer.sct.embrapa.br:article/5600Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-17T19:42:32Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Hip height and its relationships with reproductive and growth traits in Nelore cattle Altura da garupa e sua associação com características reprodutivas e de crescimento na raça Nelore |
title |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
spellingShingle |
Hip height and its relationships with reproductive and growth traits in Nelore cattle Pereira, Marcio Cinachi variance components; genetic correlations; heritability; age of dam; age of calf componentes de variância; correlações genéticas; herdabilidade; idade da vaca; idade do bezerro |
title_short |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
title_full |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
title_fullStr |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
title_full_unstemmed |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
title_sort |
Hip height and its relationships with reproductive and growth traits in Nelore cattle |
author |
Pereira, Marcio Cinachi |
author_facet |
Pereira, Marcio Cinachi Yokoo, Marcos Juniti Bignardi, Annaiza Braga Sezana, Juliana Cristina de Albuquerque, Lucia Galvão |
author_role |
author |
author2 |
Yokoo, Marcos Juniti Bignardi, Annaiza Braga Sezana, Juliana Cristina de Albuquerque, Lucia Galvão |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
CNPq e Fapesp |
dc.contributor.author.fl_str_mv |
Pereira, Marcio Cinachi Yokoo, Marcos Juniti Bignardi, Annaiza Braga Sezana, Juliana Cristina de Albuquerque, Lucia Galvão |
dc.subject.por.fl_str_mv |
variance components; genetic correlations; heritability; age of dam; age of calf componentes de variância; correlações genéticas; herdabilidade; idade da vaca; idade do bezerro |
topic |
variance components; genetic correlations; heritability; age of dam; age of calf componentes de variância; correlações genéticas; herdabilidade; idade da vaca; idade do bezerro |
description |
The objective of this work was to determine factors that affect hip height at different ages, in Nelore cattle, and to estimate the heritability and the genetic correlation between this character and reproductive and growth traits. The analyzed traits were: hip height at weaning, hip height at post weaning, weight at weaning, weight at post weaning, scrotal circumference, and age at first calving. The analyzed factors were: year and month of birth, herd, sex, age of dam at calving, and calf age. The variance covariance components were estimate by the restrict maximum likelihood methodology using animal model. All effects were significant for hip height at different ages. The heritability estimates for direct genetic effects indicated that the growth and reproductive traits respond to selection, except for age at first calving. The genetic correlations between growth traits were positive and high, from 0.42 to 0.90, which indicates that they are mostly determined by the same group of genes with additive action. Due to the low magnitude of the estimated genetic correlations, from -0.14 to 0.16, the reproductive efficiency is little influenced by selection for hip height. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-25 |
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/5600 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5600 |
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/5600/6043 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/5600/2995 |
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.45, n.6, jun. 2010; 613-620 Pesquisa Agropecuária Brasileira; v.45, n.6, jun. 2010; 613-620 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
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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1793416716419596288 |