The data used consisted of 269 body weights of Sokoto Gudali (Bokoloji) calves born at Talata Mafara Beef Research Station in Zamfara State. Genetic and phenotypic parameters for body weights at different ages were calculated. Heritability estimates obtained from paternal half sib analysis were 0.10 ± 0.002, 0.11 ± 0.001, 0.25 ± 0.005 and 0.07 ± 0.004 for calf weights at birth and at 3, 6 and 12 months of age, respectively. Repeatability estimates for calf weights at birth, 3 and 6 months of age, all considered as traits of the dam, were 0.13 ± 0.009, 0.11 ± 0.005 and 0.03 ± 0.001, respectively. The phenotypic correlations obtained between body weights at all ages were positive and highly significant (P