Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de Mato Grosso do Sul (UFMS)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorPROCRIAR Assistência Veterinária-
Autor(es): dc.contributorUniversidade Federal de Goiás (UFG)-
Autor(es): dc.contributorAssociação Nacional dos Criadores e Pesquisadores (ANCP)-
Autor(es): dc.creatorda Silva Neto, João Barbosa [UNESP]-
Autor(es): dc.creatorPeripolli, Elisa [UNESP]-
Autor(es): dc.creatorda Costa e Silva, Eliane Vianna-
Autor(es): dc.creatorEspigolan, Rafael-
Autor(es): dc.creatorNeira, Juan Diego Rodríguez [UNESP]-
Autor(es): dc.creatorSchettini, Gustavo [UNESP]-
Autor(es): dc.creatorda Costa Filho, Luiz Carlos Cesar-
Autor(es): dc.creatorBarbosa, Fernanda Battistotti-
Autor(es): dc.creatorMacedo, Gustavo Guerino-
Autor(es): dc.creatorCosta-Brunes, Ludmilla-
Autor(es): dc.creatorLobo, Raysildo B.-
Autor(es): dc.creatorPereira, Angelica Simone Cravo-
Autor(es): dc.creatorBaldi, Fernando [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:47:28Z-
Data de disponibilização: dc.date.available2022-02-22T00:47:28Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2020.104266-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206561-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206561-
Descrição: dc.descriptionThe 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.-
Descrição: dc.descriptionDepartamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)-
Descrição: dc.descriptionLaboratório de Reprodução Animal Faculdade de Medicina Veterinária e Zootecnia (FAMEZ) Universidade Federal de Mato Grosso do Sul (UFMS)-
Descrição: dc.descriptionFaculdade de Zootecnia e Engenharia de Alimentos Universidade de São Paulo Departamento de Medicina Veterinária-
Descrição: dc.descriptionPROCRIAR Assistência Veterinária-
Descrição: dc.descriptionDepartamento de Produção Animal Universidade Federal de Goiás-
Descrição: dc.descriptionAssociação Nacional dos Criadores e Pesquisadores (ANCP)-
Descrição: dc.descriptionFaculdade de Medicina Veterinária e Zootecnia Universidade de São Paulo Departamento de Nutrição e Produção Animal-
Descrição: dc.descriptionDepartamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationLivestock Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBeef cattle-
Palavras-chave: dc.subjectGenetic correlation-
Palavras-chave: dc.subjectIndicine cattle-
Palavras-chave: dc.subjectSexual precocity-
Título: dc.titleGenetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nelore bulls-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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