The growth performance of three-breed crosses of Holstein Friesian, Brown Swiss and Hariana breeds of cattle (FBH) maintained at Indian Veterinary Research Institute, Izatnagar from 1976 to 1996 was studied. The overall mean body weight increased from 26.50 ± 0.35 kg at birth to 306.33 ± 3.19 kg at 24 months of age. Their average body weights at first fertile service and first calving were 268.50 ± 2.60 kg and 305.64 ± 2.84 kg, respectively. The mean body weight at birth of parent crosses was significantly (p < 0.01) higher than that of inter-se crosses. But after the birth, the inter-se crosses showed better growth rate and achieved higher mean body weights at 24 months of age than the parent crosses. The season of calving showed a significant (p < 0.01) effect at 6 months of age on growth performance of FBH crosses. The growth among periods was significant (p<0.01) during birth to 24 months of age indicated the effects of differential managemental practices on the growth performance of these crosses. The parity of the dams had no effect on the growth performance of their daughters. Their body weight variations are best explained by the gamma type function, which can be considered as a representative model of growth performance of three-breed crosses of Holstein Friesian, Brown Swiss and Hariana cattle during birth to 24 months of age.
