Genetic evaluation for reproductive and productive traits in Brahman cattle

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal da Paraíba (UFPB)-
Autor(es): dc.contributorUniversidade Federal de Santa Catarina (UFSC)-
Autor(es): dc.contributorNacional Association of Breeders and Researchers (ANCP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBessa, Ayrton Fernandes de Oliveira-
Autor(es): dc.creatorDuarte, Igor Nelson Herculano-
Autor(es): dc.creatorRola, Luciana Diniz-
Autor(es): dc.creatorBernardes, Priscila Arrigucci-
Autor(es): dc.creatorGonzaga Neto, Severino-
Autor(es): dc.creatorLôbo, Raysildo Barbosa-
Autor(es): dc.creatorMunari, Danísio Prado-
Autor(es): dc.creatorBuzanskas, Marcos Eli-
Data de aceite: dc.date.accessioned2025-08-21T16:03:04Z-
Data de disponibilização: dc.date.available2025-08-21T16:03:04Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2021-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.theriogenology.2021.08.008-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233394-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233394-
Descrição: dc.descriptionOur objectives were to estimate genetic parameters for male and female reproductive traits and their genetic correlations with body weight and carcass traits, evaluate the genetic trends over the years, and verify the effect of inbreeding on the phenotypes of Brahman cattle. The traits evaluated were body weights at 120, 210, 365, and 450 days of age (W120, W210, W365, and W450); scrotal circumference at 365 and 450 days of age (SC365 and SC450), age at first calving (AFC), gestation length (GL), stayability (STAY), ribeye area (REA), backfat thickness (BFT), and rump fat thickness (RFT). Direct heritability estimates ranged from 0.10 ± 0.03 (AFC) to 0.43 ± 0.06 (GL). Maternal heritability estimates for body weights, scrotal circumferences, and GL ranged from 0.07 ± 0.02 to 0.15 ± 0.03. The proportion of the maternal permanent environment for W120 and W210 was equal to 0.11 ± 0.02. Genetic correlations varied between −0.60 ± 0.25 (STAY and BFT) to 0.97 ± 0.01 (W365 and W450). Except for AFC, all genetic trends were significant (p < 0.05) and presented favorable annual genetic gains. Unfavorable effects due to the increase of inbreeding coefficients were observed for body weights and AFC, suggesting greater attention be paid to the applied mating systems to control inbreeding. Reproductive traits, such as AFC and STAY, could be assisted indirectly by scrotal circumference selection. The emphasis applied to body weight selection, especially at W210, may assist REA. The BFT and RFT traits presented genetic variability and have responded to selection, although not included in the Brahman selection index.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionPró-Reitoria de Pesquisa, Universidade Federal do Rio Grande do Sul-
Descrição: dc.descriptionUniversidade Federal da Paraíba Departamento de Zootecnia-
Descrição: dc.descriptionUniversidade Federal de Santa Catarina Departamento de Zootecnia e Desenvolvimento Rural-
Descrição: dc.descriptionNacional Association of Breeders and Researchers (ANCP)-
Descrição: dc.descriptionUniversidade Estadual Paulista Departamento de Engenharia e Ciências Exatas-
Descrição: dc.descriptionUniversidade Estadual Paulista Departamento de Engenharia e Ciências Exatas-
Formato: dc.format261-268-
Idioma: dc.languageen-
Relação: dc.relationTheriogenology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBeef traits-
Palavras-chave: dc.subjectQuantitative genetics-
Palavras-chave: dc.subjectSelection criteria-
Palavras-chave: dc.subjectVariance components-
Título: dc.titleGenetic evaluation for reproductive and productive traits in Brahman cattle-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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