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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Genetic association of growth traits with carcass and meat traits in Nellore cattle

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Tonussi, R. L. [1] ; Espigolan, R. [1] ; Gordo, D. G. M. [1] ; Magalhaes, A. F. B. [1] ; Venturini, G. C. [1] ; Baldi, F. [1] ; de Oliveira, H. N. [1] ; Chardulo, L. A. L. [2] ; Tonhati, H. [1] ; de Albuquerque, L. G. [1]
Total Authors: 10
[1] Fac Ciencias Agr & Vet, Dept Zootecnia, Jaboticabal, SP - Brazil
[2] Univ Estadual Paulista, Inst Biociencias, Dept Quim, Botucatu, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Genetics and Molecular Research; v. 14, n. 4, p. 18713-18719, 2015.
Web of Science Citations: 6

The aim of this study was to estimate genetic and phenotypic associations of growth traits with carcass and meat traits in Nellore cattle. Data from male and female animals were used for weaning weight (WW; N = 241,416), yearling weight (YW, N = 126,596), weight gain from weaning to yearling (GWY, N = 78,687), and yearling hip height (YHH, N = 90,720), respectively; 877 male animals were used for hot carcass weight (HCW) and 884 for longissimus muscle area (LMA), backfat thickness (BT), marbling score (MS), and shear force (SF). The variance components were estimated by the restricted maximum likelihood method using three-trait animal models that included WW. The model for WW included direct and maternal additive genetic, maternal permanent environmental, and residual effects as random effects; contemporary group as fixed effects; and age of dam at calving and age of animal as covariates (linear and quadratic effects). For the other traits, maternal effects and the effect of age of dam at calving were excluded from the model. Heritability ranged from 0.10 +/- 0.12 (LMA) to 0.44 +/- 0.007 (YW). Genetic correlations ranged from -0.40 +/- 0.38 (WW x LMA) to 0.55 +/- 0.10 (HCW x YW). Growth, carcass, and meat traits have sufficient genetic variability to be included as selection criteria in animal breeding programs. (AU)

FAPESP's process: 09/16118-5 - Genomic tools to genetic improvement of direct economic important traits in Nelore cattle
Grantee:Lucia Galvão de Albuquerque
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/21969-7 - Use of genomic information for genetic improvement of traits in beef cattle Nellore
Grantee:Ana Fabrícia Braga Magalhães
Support type: Scholarships in Brazil - Doctorate