Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/221070 |
Resumo: | Improving reproductive indexes is of extreme importance in beef cattle production systems, as well as investigating new methodologies and traits in order to increase genetic gains for reproduction. Reproductive efficiency directly affects the profitability and productivity of herds, being an important criterion in breeding programs. The objective of this study was to estimate genetic parameters in a Nelore cattle population for probability of calving up to 39 months of age (PC39), stayability, using two measures of age (STAY64– 64 months of age; and STAY76– 76 months of age), and for scrotal circumference at weaning (SCW) and 550 days of age (SC550). Genetic parameters were estimated using 2,287,827 records collected from 1901 to 2015 in Nelore cattle belonging to the Geneplus beef cattle breeding program (Campo Grande, MS, Brazil) database. Bayesian procedures were applied in single- and two-trait analyses using the GIBBS2F90 and THRGIBBS1F90 software, for linear and threshold analysis, respectively. Heritabilities from single-trait analysis were 0.15, 0.23, 0.20, 0.28, and 0.36 for PC39, STAY64, STAY76, SCW, and SC550, respectively. The correlation between PC39 and scrotal circumference were of low magnitude, 0.20 and 0.25 with SCW and SC550, respectively, suggesting that the selection for SC550 in sires would possibly lead to higher changes in PC39 occurrence than selection for SCW. The reproductive traits comprised in this study should be included in Nelore cattle breeding programs. Especially PC39, STAY64, and SC550 because its traits would increase the indexes reproductions of the production system. |
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spelling |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattleBos indicusHeritabilityReproductive traitsThreshold modelImproving reproductive indexes is of extreme importance in beef cattle production systems, as well as investigating new methodologies and traits in order to increase genetic gains for reproduction. Reproductive efficiency directly affects the profitability and productivity of herds, being an important criterion in breeding programs. The objective of this study was to estimate genetic parameters in a Nelore cattle population for probability of calving up to 39 months of age (PC39), stayability, using two measures of age (STAY64– 64 months of age; and STAY76– 76 months of age), and for scrotal circumference at weaning (SCW) and 550 days of age (SC550). Genetic parameters were estimated using 2,287,827 records collected from 1901 to 2015 in Nelore cattle belonging to the Geneplus beef cattle breeding program (Campo Grande, MS, Brazil) database. Bayesian procedures were applied in single- and two-trait analyses using the GIBBS2F90 and THRGIBBS1F90 software, for linear and threshold analysis, respectively. Heritabilities from single-trait analysis were 0.15, 0.23, 0.20, 0.28, and 0.36 for PC39, STAY64, STAY76, SCW, and SC550, respectively. The correlation between PC39 and scrotal circumference were of low magnitude, 0.20 and 0.25 with SCW and SC550, respectively, suggesting that the selection for SC550 in sires would possibly lead to higher changes in PC39 occurrence than selection for SCW. The reproductive traits comprised in this study should be included in Nelore cattle breeding programs. Especially PC39, STAY64, and SC550 because its traits would increase the indexes reproductions of the production system.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Departamento de Zootecnia Universidade Tecnológica Federal do ParanáEmbrapa Gado de CorteUniversity of Georgia – UGA Rhodes Center for Animal and Dairy ScienceDepartamento de Ciência Animal Faculdade de Ciências Agrárias e VeterináriasUniversidade Tecnológica Federal do ParanáEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Rhodes Center for Animal and Dairy ScienceFaculdade de Ciências Agrárias e VeterináriasKluska, S.Silva, L. O.C.Maia, F. M. CostaLourenco, D. L.Stivanin, T. E.Baldi, F.Peripolli, E.Martins, E. N.2022-04-28T19:08:54Z2022-04-28T19:08:54Z2018-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLivestock Research for Rural Development, v. 30, n. 5, 2018.0121-3784http://hdl.handle.net/11449/2210702-s2.0-85046301176Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengLivestock Research for Rural Developmentinfo:eu-repo/semantics/openAccess2022-04-28T19:08:54Zoai:repositorio.unesp.br:11449/221070Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:49:31.894306Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
title |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
spellingShingle |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle Kluska, S. Bos indicus Heritability Reproductive traits Threshold model |
title_short |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
title_full |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
title_fullStr |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
title_full_unstemmed |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
title_sort |
Estimation of genetic parameters for probability of calving up to 39 months of age, stayability and scrotal circumference in Nelore cattle |
author |
Kluska, S. |
author_facet |
Kluska, S. Silva, L. O.C. Maia, F. M. Costa Lourenco, D. L. Stivanin, T. E. Baldi, F. Peripolli, E. Martins, E. N. |
author_role |
author |
author2 |
Silva, L. O.C. Maia, F. M. Costa Lourenco, D. L. Stivanin, T. E. Baldi, F. Peripolli, E. Martins, E. N. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Tecnológica Federal do Paraná Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Rhodes Center for Animal and Dairy Science Faculdade de Ciências Agrárias e Veterinárias |
dc.contributor.author.fl_str_mv |
Kluska, S. Silva, L. O.C. Maia, F. M. Costa Lourenco, D. L. Stivanin, T. E. Baldi, F. Peripolli, E. Martins, E. N. |
dc.subject.por.fl_str_mv |
Bos indicus Heritability Reproductive traits Threshold model |
topic |
Bos indicus Heritability Reproductive traits Threshold model |
description |
Improving reproductive indexes is of extreme importance in beef cattle production systems, as well as investigating new methodologies and traits in order to increase genetic gains for reproduction. Reproductive efficiency directly affects the profitability and productivity of herds, being an important criterion in breeding programs. The objective of this study was to estimate genetic parameters in a Nelore cattle population for probability of calving up to 39 months of age (PC39), stayability, using two measures of age (STAY64– 64 months of age; and STAY76– 76 months of age), and for scrotal circumference at weaning (SCW) and 550 days of age (SC550). Genetic parameters were estimated using 2,287,827 records collected from 1901 to 2015 in Nelore cattle belonging to the Geneplus beef cattle breeding program (Campo Grande, MS, Brazil) database. Bayesian procedures were applied in single- and two-trait analyses using the GIBBS2F90 and THRGIBBS1F90 software, for linear and threshold analysis, respectively. Heritabilities from single-trait analysis were 0.15, 0.23, 0.20, 0.28, and 0.36 for PC39, STAY64, STAY76, SCW, and SC550, respectively. The correlation between PC39 and scrotal circumference were of low magnitude, 0.20 and 0.25 with SCW and SC550, respectively, suggesting that the selection for SC550 in sires would possibly lead to higher changes in PC39 occurrence than selection for SCW. The reproductive traits comprised in this study should be included in Nelore cattle breeding programs. Especially PC39, STAY64, and SC550 because its traits would increase the indexes reproductions of the production system. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05-01 2022-04-28T19:08:54Z 2022-04-28T19:08:54Z |
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 |
Livestock Research for Rural Development, v. 30, n. 5, 2018. 0121-3784 http://hdl.handle.net/11449/221070 2-s2.0-85046301176 |
identifier_str_mv |
Livestock Research for Rural Development, v. 30, n. 5, 2018. 0121-3784 2-s2.0-85046301176 |
url |
http://hdl.handle.net/11449/221070 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Livestock Research for Rural Development |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus 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_ |
1808128985610059776 |