Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4238/2012.October.17.2 http://hdl.handle.net/11449/4972 |
Resumo: | We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW. |
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Repositório Institucional da UNESP |
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Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inferenceBayesian inferenceBeef cattleFertilityGenetic parameterWe estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista, Fac Ciencias & Agr & Vet, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias & Agr & Vet, Jaboticabal, SP, BrazilFunpec-editoraUniversidade Estadual Paulista (Unesp)Boligon, A. A. [UNESP]Baldi, Fernando [UNESP]Albuquerque, Lucia Galvão de [UNESP]2014-05-20T13:19:12Z2014-05-20T13:19:12Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4516-4524application/pdfhttp://dx.doi.org/10.4238/2012.October.17.2Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012.1676-5680http://hdl.handle.net/11449/497210.4238/2012.October.17.2WOS:000313960500096WOS000313960500096.pdf5866981114947883Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Research0,439info:eu-repo/semantics/openAccess2024-06-07T18:40:40Zoai:repositorio.unesp.br:11449/4972Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:08:58.410690Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
title |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
spellingShingle |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference Boligon, A. A. [UNESP] Bayesian inference Beef cattle Fertility Genetic parameter |
title_short |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
title_full |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
title_fullStr |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
title_full_unstemmed |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
title_sort |
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference |
author |
Boligon, A. A. [UNESP] |
author_facet |
Boligon, A. A. [UNESP] Baldi, Fernando [UNESP] Albuquerque, Lucia Galvão de [UNESP] |
author_role |
author |
author2 |
Baldi, Fernando [UNESP] Albuquerque, Lucia Galvão de [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Boligon, A. A. [UNESP] Baldi, Fernando [UNESP] Albuquerque, Lucia Galvão de [UNESP] |
dc.subject.por.fl_str_mv |
Bayesian inference Beef cattle Fertility Genetic parameter |
topic |
Bayesian inference Beef cattle Fertility Genetic parameter |
description |
We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2014-05-20T13:19:12Z 2014-05-20T13:19:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4238/2012.October.17.2 Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012. 1676-5680 http://hdl.handle.net/11449/4972 10.4238/2012.October.17.2 WOS:000313960500096 WOS000313960500096.pdf 5866981114947883 |
url |
http://dx.doi.org/10.4238/2012.October.17.2 http://hdl.handle.net/11449/4972 |
identifier_str_mv |
Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012. 1676-5680 10.4238/2012.October.17.2 WOS:000313960500096 WOS000313960500096.pdf 5866981114947883 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Research 0,439 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4516-4524 application/pdf |
dc.publisher.none.fl_str_mv |
Funpec-editora |
publisher.none.fl_str_mv |
Funpec-editora |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128611017818112 |