Research Article

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R. Domingues; S. Wohlres-Viana; D.R.L. Reis; H.C. Teixeira; A.P. Ferreira; S.E.F. Guimarães; M.C.A. Prata; J. Furlong; R.S. Verneque; M.A. Machado
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Survival or longevity is an economically important trait in beef cattle. The main inconvenience for its inclusion in selection criteria is delayed recording of phenotypic data and the high computational demand for including survival in proportional hazard models. Thus, identification of a longevity-correlated trait that could be recorded early in life would be very useful for selection ... more

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Bos indicus; marker-assisted selection; Molecular breeding value; Protein turnover; Residual feed intake

We looked for possible associations of SNPs in genes related to protein turnover, with growth, feed efficiency and carcass traits in feedlot Nellore cattle. Purebred Nellore bulls and steers (N = 290; 378 ± 42 kg body weight, 23 months ± 42 days old) were evaluated for daily feed intake, body weight gain (BWG), gross feed efficiency, feed conversion ratio, partial efficiency of growth, ... more

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