Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800004 |
Resumo: | The objective of this study was to estimate (co)variance components for weight at 550 days, average daily gain and an index with both traits, and to compare alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests. The heritability estimates were 0.73, 0.31 and 0.44 for weight at 550 days, average daily gain and index, respectively. Animals were ranked according to their predicted breeding values or the phenotypic deviations in relation to the mean of the test. Although the correlations between breeding values and phenotypic deviations were high, there were differences in the number of animals selected in common when the selection criteria were the predicted breeding values or the phenotypic deviations. Mixed models are more appropriate than the least squares method and should be utilized in the evaluation of young bulls in performance tests. |
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Revista Brasileira de Zootecnia (Online) |
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Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance testsbreeding valueheritabilityleast squaremixed modelsselectionThe objective of this study was to estimate (co)variance components for weight at 550 days, average daily gain and an index with both traits, and to compare alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests. The heritability estimates were 0.73, 0.31 and 0.44 for weight at 550 days, average daily gain and index, respectively. Animals were ranked according to their predicted breeding values or the phenotypic deviations in relation to the mean of the test. Although the correlations between breeding values and phenotypic deviations were high, there were differences in the number of animals selected in common when the selection criteria were the predicted breeding values or the phenotypic deviations. Mixed models are more appropriate than the least squares method and should be utilized in the evaluation of young bulls in performance tests.Sociedade Brasileira de Zootecnia2013-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800004Revista Brasileira de Zootecnia v.42 n.8 2013reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982013000800004info:eu-repo/semantics/openAccessFragomeni,Breno de OliveiraScalez,Daiane Cristina BeckerToral,Fábio Luiz BuraneloBergmann,José Aurélio GarciaPereira,Idalmo GarciaCosta,Paula Souza Teixeira daeng2013-07-23T00:00:00Zoai:scielo:S1516-35982013000800004Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2013-07-23T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
title |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
spellingShingle |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests Fragomeni,Breno de Oliveira breeding value heritability least square mixed models selection |
title_short |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
title_full |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
title_fullStr |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
title_full_unstemmed |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
title_sort |
Genetic parameters and alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests |
author |
Fragomeni,Breno de Oliveira |
author_facet |
Fragomeni,Breno de Oliveira Scalez,Daiane Cristina Becker Toral,Fábio Luiz Buranelo Bergmann,José Aurélio Garcia Pereira,Idalmo Garcia Costa,Paula Souza Teixeira da |
author_role |
author |
author2 |
Scalez,Daiane Cristina Becker Toral,Fábio Luiz Buranelo Bergmann,José Aurélio Garcia Pereira,Idalmo Garcia Costa,Paula Souza Teixeira da |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fragomeni,Breno de Oliveira Scalez,Daiane Cristina Becker Toral,Fábio Luiz Buranelo Bergmann,José Aurélio Garcia Pereira,Idalmo Garcia Costa,Paula Souza Teixeira da |
dc.subject.por.fl_str_mv |
breeding value heritability least square mixed models selection |
topic |
breeding value heritability least square mixed models selection |
description |
The objective of this study was to estimate (co)variance components for weight at 550 days, average daily gain and an index with both traits, and to compare alternatives for evaluation and ranking of Nellore young bulls in pasture performance tests. The heritability estimates were 0.73, 0.31 and 0.44 for weight at 550 days, average daily gain and index, respectively. Animals were ranked according to their predicted breeding values or the phenotypic deviations in relation to the mean of the test. Although the correlations between breeding values and phenotypic deviations were high, there were differences in the number of animals selected in common when the selection criteria were the predicted breeding values or the phenotypic deviations. Mixed models are more appropriate than the least squares method and should be utilized in the evaluation of young bulls in performance tests. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982013000800004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.42 n.8 2013 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318150869581824 |