Is it possible to select body weight without compromising carcass traits and reproductive efficiency in Caracu cattle?

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorBeef Cattle Research Center-
Autor(es): dc.contributorFederal University of Viçosa-
Autor(es): dc.contributorSwedish University of Agricultural Sciences (SLU)-
Autor(es): dc.creatorLigori, Viviane Andrade-
Autor(es): dc.creatorMalheiros, Jessica Moraes-
Autor(es): dc.creatorCarrara, Eula Regina-
Autor(es): dc.creatorDominguez-Castaño, Pablo-
Autor(es): dc.creatorda Silva Neto, João Barbosa-
Autor(es): dc.creatordos Santos Gonçalves Cyrillo, Joslaine Noely-
Autor(es): dc.creatorMercadante, Maria Eugênia Zerlotti-
Autor(es): dc.creatorZadra, Lenira El Faro-
Data de aceite: dc.date.accessioned2025-08-21T22:47:43Z-
Data de disponibilização: dc.date.available2025-08-21T22:47:43Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s13353-025-00959-3-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298262-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298262-
Descrição: dc.descriptionThe Caracu is a taurine breed adapted to Brazil’s climatic conditions and has been selected for 40 + years for Body Weight (BW), maintaining performance records across multiple generations in its database. However, selecting young animals for BW can result in excessive growth, potentially impacting carcass and reproductive traits. This study aimed to estimate genetic correlations and, based on these estimates, evaluate how selection for BW (adjusted to 378 and 550 days of age for males and females, respectively) has influenced carcass traits and reproductive efficiency in this breed. The dataset contained records for BW (kg), Ribeye area (REA, cm2), Height-to-width ratio of the Longissimus dorsi muscle (HWR), Backfat thickness (BFT, mm), Rump fat thickness (RFT, mm), Yearly scrotal circumference (SC, cm), and Days to calving (DC, days) from animals born between 1966 and 2022. (Co)variance components were estimated by Bayesian inference using two-trait animal models. Analyses were conducted to estimate genetic parameters for pairs of traits, including BW with carcass traits (BW × REA, BW × HWR, BW × BFT, and BW × RFT) and BW with reproductive traits (BW × DC and BW × SC). Additionally, analyses were performed for pairwise combinations among carcass traits (REA × HWR, REA × BFT, REA × RFT, HWR × BFT, HWR × RFT, and RFT × BFT) and between reproductive traits (DC × SC). The relationship matrix included 4,783 animals, of which 829 were genotyped with the GGP Bovine 100 K SNP panel. Favorable genetic correlations (rg) were observed between BW and REA (0.51 ± 0.11), HWR (0.45 ± 0.17), SC (0.24 ± 0.13), and RFT (0.15 ± 0.21), with the latter being favorable but low. On the other hand, unfavorable genetic correlations were observed between BW and BFT (-0.07 ± 0.21), which was unfavorable but close to zero relationship, and between BW and DC (0.48 ± 0.15). The significance of carcass and reproductive traits is underscored by the favorable, rg between BW and the carcass traits REA (BW × REA) and HWR (BW × HWR), while a high, unfavorable rg was observed between BW and DC cows. These findings emphasize the importance of carefully balancing genetic selection to optimize growth, carcass quality, and adequate reproduction in Caracu cattle.-
Descrição: dc.descriptionSchool of Agricultural and Veterinary Sciences São Paulo State University (UNESP), SP-
Descrição: dc.descriptionAnimal Science Institute Beef Cattle Research Center, SP-
Descrição: dc.descriptionDepartment of Animal Science Federal University of Viçosa, MG-
Descrição: dc.descriptionDepartment of Animal Biosciences Swedish University of Agricultural Sciences (SLU)-
Descrição: dc.descriptionSchool of Agricultural and Veterinary Sciences São Paulo State University (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Applied Genetics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBody weight-
Palavras-chave: dc.subjectDays to calving-
Palavras-chave: dc.subjectFat thickness-
Palavras-chave: dc.subjectGenetic correlation-
Palavras-chave: dc.subjectGenetic improvement-
Palavras-chave: dc.subjectHeight-to-width ratio-
Palavras-chave: dc.subjectRibeye area-
Palavras-chave: dc.subjectScrotal circumference-
Título: dc.titleIs it possible to select body weight without compromising carcass traits and reproductive efficiency in Caracu cattle?-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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