Analysis of residual feed intake in Nellore bulls of different ages, rib eye area, and backfat thickness

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorFdn Univ Agr Colombia (UNIAGRARIA)-
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorInst Anim Sci IZ-
Autor(es): dc.creatorOliveira, Matheus Henrique Vargas de-
Autor(es): dc.creatorMalheiros, Jessica Moraes-
Autor(es): dc.creatorOspina, Alejandra Maria Toro-
Autor(es): dc.creatorDominguez-Castano, Pablo-
Autor(es): dc.creatorBenfica, Lorena Ferreira-
Autor(es): dc.creatorCorreia, Luiz Eduardo Cruz dos Santos-
Autor(es): dc.creatorGaya, Leila de Genova-
Autor(es): dc.creatorMercadante, Maria Eugenia Zerlotti-
Autor(es): dc.creatorCastilhos, Andre Michel de-
Autor(es): dc.creatorSantos Goncalves Cyrillo, Joslaine Noely dos-
Autor(es): dc.creatorSartori, Jessica Biasotto-
Autor(es): dc.creatorAlbuquerque, Lucia Galvao de-
Autor(es): dc.creatorVasconcelos Silva, Josineudson Augusto de-
Data de aceite: dc.date.accessioned2025-08-21T19:58:00Z-
Data de disponibilização: dc.date.available2025-08-21T19:58:00Z-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11250-022-03285-6-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/237969-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/237969-
Descrição: dc.descriptionThe aim of the present study was to use different models that include body composition phenotypes for the evaluation of residual feed intake (RFI) in Nellore bulls of different ages. Phenotypic and genotypic data of bulls that had participated in feed efficiency tests of a commercial (COM) and an experimental (EXP) herd between 2007 and 2019 were used. The mean entry age in the two herds was 645 and 279 days, respectively. The phenotypes were evaluated: rib eye area (REA), backfat thickness (BFT), residual feed intake (RFIKOCH), RFI adjusted for REA (RFIREA), RFI adjusted for BFT (RFIBFT), and RFI adjusted for REA and BFT (RFIREA BFT). The (co)variance components and prediction of genomic estimated breeding values (GEBV) were obtained by REML using ssGBLUP in single and two-trait analyses. Spearman's correlations were calculated based on the GEBV for RFIKOCH. The RFI phenotypes exhibited moderate heritability estimates in both herds (0.17 +/- 0.03 to 0.27 +/- 0.04). The genetic correlation between phenotypes was positive and high (0.99) in the two herds, a fact that permitted the creation of a single database (SDB). The heritability estimates of the SDB were also of moderate magnitude for the different definitions of RFI (0.19 +/- 0.04 to 0.21 +/- 0.04). The genetic correlations were positive and high between RFI traits 0.97 +/- 0.01 to 0.99 +/- 0.01), and positive and low/moderate between REA and BFT (0.01 +/- 0.10 to 0.31 +/- 0.12). The selection of animals based on the GEBV for RFIKOCH did not alter the ranking of individuals selected for RFIREA, RFIBFT, and RFIREA BFT. The results of the present study suggest that records of Nellore bulls of different ages and with different body compositions can be combined in a SDB for RFI calculation. Therefore, young animals can be evaluated in feed efficiency tests in order to reduce costs and the generation interval and possibly to obtain a higher response to selection.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Coll Agr & Vet Sci FCAV, Jaboticabal, SP, Brazil-
Descrição: dc.descriptionEmbrapa Southeast Livestock EMBRAPA, Sao Carlos, SP, Brazil-
Descrição: dc.descriptionFdn Univ Agr Colombia UNIAGRARIA, Fac Med Vet, Bogota, Colombia-
Descrição: dc.descriptionFed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, MG, Brazil-
Descrição: dc.descriptionInst Anim Sci IZ, Sertaozinho, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Sch Vet Med & Anim Sci FMVZ, Botucatu, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Coll Agr & Vet Sci FCAV, Jaboticabal, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, UNESP, Sch Vet Med & Anim Sci FMVZ, Botucatu, SP, Brazil-
Descrição: dc.descriptionCAPES: 001-
Formato: dc.format9-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationTropical Animal Health And Production-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectBos taurus indicus-
Palavras-chave: dc.subjectVariance component-
Palavras-chave: dc.subjectFeed efficiency-
Palavras-chave: dc.subjectGenomic estimated breeding value-
Palavras-chave: dc.subjectHeritability-
Título: dc.titleAnalysis of residual feed intake in Nellore bulls of different ages, rib eye area, and backfat thickness-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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