Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.livsci.2020.104266 http://hdl.handle.net/11449/206561 |
Resumo: | The reduction of age at puberty in young bulls is an important issue to reduce the growing phase and promote substantial savings in production cost as well as to reduce the generation interval. This study aims to estimate genetic parameters for age at puberty in males (APM), growth, carcass, and reproductive-related traits in young Nelore bulls. Additionally, the direct and correlated response for growth, reproductive, and carcass traits were also estimated when a selection was applied for APM in such young bulls. APM was determined through evaluations carried out after weaning, using information from andrological clinical examination, ultrasound records, and scrotal circumference measurements. Records from 181,345 Nelore animals born between 2010 to 2017 were used. These animals were calves from 5,257 sires and 50,742 dams, and belonged to 18 farms located in the Midwest, Southeast, Northeast, and North regions of Brazil. The relationship matrix was built using information from 265,813 animals. The covariance components and the genetic parameters for APM, adjusted scrotal circumference at 365 (SC365) and 450 (SC450) days of age, adjusted weight at 210 (W210) and 450 (W450) days of age, age at first calving (AFC), ribeye area (REA), subcutaneous fat thickness (SFT), and rump fat thickness (RFT) were estimated using a linear animal model. A threshold animal model was used for Stayability (STAY) and early heifer pregnancy (PP30) traits. The heritabilities obtained were: 0.30 (APM), 0.33 (SC365), 0.37 (SC450), 0.14 (W210), 0.26 (W450), 0.08 (AFC), 0.29 (PP30), 0.19 (STAY), 0.32 (REA), 0.19 (SFT), and 0.28 (RFT). The genetic correlations estimates between APM and growth, reproductive, and carcass related traits were: -0.39 (SC365), -0.58 (SC450), -0.01 (W210), 0.08 (W450), 0.30 (AFC), -0.24 (PP30), 0.35 (STAY), 0.08 (REA), -0.05 (SFT), and -0.30 (RFT). The APM is a new approach to evaluate early sexual precocity in young bulls, and it would allow better identification of young candidates when compared to those selected based on scrotal circumference measures. Genetic progress is expected for APM in young bulls since it would favor the heifer's sexual precocity together with the dam's longevity without impacting growth and carcass traits. The results of this study encourage the use of male sexual precocity trait assisted by genomic selection to improve the genetic evaluation reliability of young bulls. |
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Repositório Institucional da UNESP |
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Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bullsBeef cattleGenetic correlationIndicine cattleSexual precocityThe reduction of age at puberty in young bulls is an important issue to reduce the growing phase and promote substantial savings in production cost as well as to reduce the generation interval. This study aims to estimate genetic parameters for age at puberty in males (APM), growth, carcass, and reproductive-related traits in young Nelore bulls. Additionally, the direct and correlated response for growth, reproductive, and carcass traits were also estimated when a selection was applied for APM in such young bulls. APM was determined through evaluations carried out after weaning, using information from andrological clinical examination, ultrasound records, and scrotal circumference measurements. Records from 181,345 Nelore animals born between 2010 to 2017 were used. These animals were calves from 5,257 sires and 50,742 dams, and belonged to 18 farms located in the Midwest, Southeast, Northeast, and North regions of Brazil. The relationship matrix was built using information from 265,813 animals. The covariance components and the genetic parameters for APM, adjusted scrotal circumference at 365 (SC365) and 450 (SC450) days of age, adjusted weight at 210 (W210) and 450 (W450) days of age, age at first calving (AFC), ribeye area (REA), subcutaneous fat thickness (SFT), and rump fat thickness (RFT) were estimated using a linear animal model. A threshold animal model was used for Stayability (STAY) and early heifer pregnancy (PP30) traits. The heritabilities obtained were: 0.30 (APM), 0.33 (SC365), 0.37 (SC450), 0.14 (W210), 0.26 (W450), 0.08 (AFC), 0.29 (PP30), 0.19 (STAY), 0.32 (REA), 0.19 (SFT), and 0.28 (RFT). The genetic correlations estimates between APM and growth, reproductive, and carcass related traits were: -0.39 (SC365), -0.58 (SC450), -0.01 (W210), 0.08 (W450), 0.30 (AFC), -0.24 (PP30), 0.35 (STAY), 0.08 (REA), -0.05 (SFT), and -0.30 (RFT). The APM is a new approach to evaluate early sexual precocity in young bulls, and it would allow better identification of young candidates when compared to those selected based on scrotal circumference measures. Genetic progress is expected for APM in young bulls since it would favor the heifer's sexual precocity together with the dam's longevity without impacting growth and carcass traits. The results of this study encourage the use of male sexual precocity trait assisted by genomic selection to improve the genetic evaluation reliability of young bulls.Departamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Laboratório de Reprodução Animal Faculdade de Medicina Veterinária e Zootecnia (FAMEZ) Universidade Federal de Mato Grosso do Sul (UFMS)Faculdade de Zootecnia e Engenharia de Alimentos Universidade de São Paulo Departamento de Medicina VeterináriaPROCRIAR Assistência VeterináriaDepartamento de Produção Animal Universidade Federal de GoiásAssociação Nacional dos Criadores e Pesquisadores (ANCP)Faculdade de Medicina Veterinária e Zootecnia Universidade de São Paulo Departamento de Nutrição e Produção AnimalDepartamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista (Unesp)Universidade Federal de Mato Grosso do Sul (UFMS)Universidade de São Paulo (USP)PROCRIAR Assistência VeterináriaUniversidade Federal de Goiás (UFG)Associação Nacional dos Criadores e Pesquisadores (ANCP)da Silva Neto, João Barbosa [UNESP]Peripolli, Elisa [UNESP]da Costa e Silva, Eliane ViannaEspigolan, RafaelNeira, Juan Diego Rodríguez [UNESP]Schettini, Gustavo [UNESP]da Costa Filho, Luiz Carlos CesarBarbosa, Fernanda BattistottiMacedo, Gustavo GuerinoCosta-Brunes, LudmillaLobo, Raysildo B.Pereira, Angelica Simone CravoBaldi, Fernando [UNESP]2021-06-25T10:34:20Z2021-06-25T10:34:20Z2020-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.livsci.2020.104266Livestock Science, v. 241.1871-1413http://hdl.handle.net/11449/20656110.1016/j.livsci.2020.1042662-s2.0-85091522601Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengLivestock Scienceinfo:eu-repo/semantics/openAccess2024-06-07T18:40:13Zoai:repositorio.unesp.br:11449/206561Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:48:00.980073Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
title |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
spellingShingle |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls da Silva Neto, João Barbosa [UNESP] Beef cattle Genetic correlation Indicine cattle Sexual precocity |
title_short |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
title_full |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
title_fullStr |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
title_full_unstemmed |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
title_sort |
Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls |
author |
da Silva Neto, João Barbosa [UNESP] |
author_facet |
da Silva Neto, João Barbosa [UNESP] Peripolli, Elisa [UNESP] da Costa e Silva, Eliane Vianna Espigolan, Rafael Neira, Juan Diego Rodríguez [UNESP] Schettini, Gustavo [UNESP] da Costa Filho, Luiz Carlos Cesar Barbosa, Fernanda Battistotti Macedo, Gustavo Guerino Costa-Brunes, Ludmilla Lobo, Raysildo B. Pereira, Angelica Simone Cravo Baldi, Fernando [UNESP] |
author_role |
author |
author2 |
Peripolli, Elisa [UNESP] da Costa e Silva, Eliane Vianna Espigolan, Rafael Neira, Juan Diego Rodríguez [UNESP] Schettini, Gustavo [UNESP] da Costa Filho, Luiz Carlos Cesar Barbosa, Fernanda Battistotti Macedo, Gustavo Guerino Costa-Brunes, Ludmilla Lobo, Raysildo B. Pereira, Angelica Simone Cravo Baldi, Fernando [UNESP] |
author2_role |
author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Mato Grosso do Sul (UFMS) Universidade de São Paulo (USP) PROCRIAR Assistência Veterinária Universidade Federal de Goiás (UFG) Associação Nacional dos Criadores e Pesquisadores (ANCP) |
dc.contributor.author.fl_str_mv |
da Silva Neto, João Barbosa [UNESP] Peripolli, Elisa [UNESP] da Costa e Silva, Eliane Vianna Espigolan, Rafael Neira, Juan Diego Rodríguez [UNESP] Schettini, Gustavo [UNESP] da Costa Filho, Luiz Carlos Cesar Barbosa, Fernanda Battistotti Macedo, Gustavo Guerino Costa-Brunes, Ludmilla Lobo, Raysildo B. Pereira, Angelica Simone Cravo Baldi, Fernando [UNESP] |
dc.subject.por.fl_str_mv |
Beef cattle Genetic correlation Indicine cattle Sexual precocity |
topic |
Beef cattle Genetic correlation Indicine cattle Sexual precocity |
description |
The reduction of age at puberty in young bulls is an important issue to reduce the growing phase and promote substantial savings in production cost as well as to reduce the generation interval. This study aims to estimate genetic parameters for age at puberty in males (APM), growth, carcass, and reproductive-related traits in young Nelore bulls. Additionally, the direct and correlated response for growth, reproductive, and carcass traits were also estimated when a selection was applied for APM in such young bulls. APM was determined through evaluations carried out after weaning, using information from andrological clinical examination, ultrasound records, and scrotal circumference measurements. Records from 181,345 Nelore animals born between 2010 to 2017 were used. These animals were calves from 5,257 sires and 50,742 dams, and belonged to 18 farms located in the Midwest, Southeast, Northeast, and North regions of Brazil. The relationship matrix was built using information from 265,813 animals. The covariance components and the genetic parameters for APM, adjusted scrotal circumference at 365 (SC365) and 450 (SC450) days of age, adjusted weight at 210 (W210) and 450 (W450) days of age, age at first calving (AFC), ribeye area (REA), subcutaneous fat thickness (SFT), and rump fat thickness (RFT) were estimated using a linear animal model. A threshold animal model was used for Stayability (STAY) and early heifer pregnancy (PP30) traits. The heritabilities obtained were: 0.30 (APM), 0.33 (SC365), 0.37 (SC450), 0.14 (W210), 0.26 (W450), 0.08 (AFC), 0.29 (PP30), 0.19 (STAY), 0.32 (REA), 0.19 (SFT), and 0.28 (RFT). The genetic correlations estimates between APM and growth, reproductive, and carcass related traits were: -0.39 (SC365), -0.58 (SC450), -0.01 (W210), 0.08 (W450), 0.30 (AFC), -0.24 (PP30), 0.35 (STAY), 0.08 (REA), -0.05 (SFT), and -0.30 (RFT). The APM is a new approach to evaluate early sexual precocity in young bulls, and it would allow better identification of young candidates when compared to those selected based on scrotal circumference measures. Genetic progress is expected for APM in young bulls since it would favor the heifer's sexual precocity together with the dam's longevity without impacting growth and carcass traits. The results of this study encourage the use of male sexual precocity trait assisted by genomic selection to improve the genetic evaluation reliability of young bulls. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-01 2021-06-25T10:34:20Z 2021-06-25T10:34:20Z |
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/10.1016/j.livsci.2020.104266 Livestock Science, v. 241. 1871-1413 http://hdl.handle.net/11449/206561 10.1016/j.livsci.2020.104266 2-s2.0-85091522601 |
url |
http://dx.doi.org/10.1016/j.livsci.2020.104266 http://hdl.handle.net/11449/206561 |
identifier_str_mv |
Livestock Science, v. 241. 1871-1413 10.1016/j.livsci.2020.104266 2-s2.0-85091522601 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Livestock Science |
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_ |
1808128419328688128 |