The objective ofthis study was to estimate genetic parameters for body weights at weaning (PD),12 months old (P12) and adult age (PAD), culling age (TPR, days in herd), number(ND10) and kilograms (QD10) of calves weaned up to ten years of age, total number(NDT) and total kilograms (QDT) of calves weaned during herd life, and kilogramsof calves weaned per year in herd (QTPR) of Canchim (5/8 Charolais + 3/8 Zebu)females from one herd. Data consisted of 3,249, 3,111, 1,138, 1,340, 1,362,1,362, 1,340, 1,340 and 1,340 records of PD, P12, PAD, TPR, ND10, QD10, NDT,QDT and QTPR, respectively. Variance and covariance components were estimatedby bivariate analyses between PD, P12 and PAD and other production traits usingBayesian inference. The models included the additive direct, permanent environmentaland residual random effects and the fixed effects year and month of birth orcalving, calving age and age of the animal, depending on the trait. QD10, QDTand QTPR of each female were obtained by adjusting the weaning weights of calvesfor year and month of birth, sex and age of cow. Average of heritability estimateswere 0.38 (PD), 0.40 (P12), 0.54 (PAD), 0.22 (TPR), 0.22 (ND10), 0.24 (QD10),0.23 (NDT), 0.23 (QDT) and 0.32 (QTPR), indicating genetic variability to obtainresponse by selection. Genetic correlations between TPR (-0.02, 0.26 and -0.12),ND10 (0.04, 0.10 and -0.29), QD10 (0.37, 0.39 and -0.13), NDT (-0.03, 0.14 and-0.25), QDT (0.20, 0.33 and -0.16), QTPR (0.21, 0.28 and -0.19) and body weights(PD, P12 and PAD) suggest that selection of females based on weaning and 12-monthbody weights will not affect productivity. However, it may be decreased by increasingfemale adult body weight.
