Backfat thickness

Genetic parameters for carcass traits and body weight using a Bayesian approach in the Canchim cattle

S. L. C. Meirelles, Mokry, F. B., Espasandín, A. C., Dias, M. A. D., Baena, M. M., Regitano, L. Cde A., Meirelles, S. L. C., Mokry, F. B., Espasandín, A. C., Dias, M. A. D., Baena, M. M., and Regitano, L. Cde A., “Genetic parameters for carcass traits and body weight using a Bayesian approach in the Canchim cattle”, vol. 15, p. -, 2016.

Correlation between genetic parameters and factors such as backfat thickness (BFT), rib eye area (REA), and body weight (BW) were estimated for Canchim beef cattle raised in natural pastures of Brazil. Data from 1648 animals were analyzed using multi-trait (BFT, REA, and BW) animal models by the Bayesian approach. This model included the effects of contemporary group, age, and individual heterozygosity as covariates. In addition, direct additive genetic and random residual effects were also analyzed.

Candidate genes for carcass traits in a tropical-adapted Brazilian composite beef breed

G. Veneroni-Gouveia, Tizioto, P. C., Meirelles, S. L. C., Santiago, A. C., Alencar, M. M., and Regitano, L. C. A., “Candidate genes for carcass traits in a tropical-adapted Brazilian composite beef breed”, vol. 14, pp. 16667-16674, 2015.

Backfat thickness (BFT) and ribeye area (REA) are important production traits but, because they are measured late in the animal’s life, they have not been efficiently included in breeding programs. The aim of this study was to evaluate whether single nucleotide polymorphisms (SNPs) mapped to the leptin, PPARGC1A, PSMC1, CRH, and FABP4 genes, which influence BFT and REA in Canchim cattle, a composite beef breed (5/8 Charolais + 3/8 Zebu). BFT and REA phenotypic records were obtained by ultrasound measurements from 18-month-old animals.

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