Abstract   

Data from pure and crosshreà animals of Bhagnari (BN) and Australian Droughtmaster (DM) were analyzed to estimate genetic part of variance in weaning weight of Nariinaster’ (62.5% DM 37.5% BN) aninials. Weaning weight averaged 129.7 kg in 74 calves having sire identification. The sire effects were non-significant statistically while sex of the calf had a significant effect (P < .05) on the trait. Heritability (h estimate by an animal model was 0.08. Best Linear Unbiased Estimates (BLUE) of weaning weight for male and female calves were 133.9 and 125.5 kg, respectively. Additive genetic variance was 17.64 kg while error variance was 214.0 kg Both phenotypic and genetic trends were positive hut not different from zero, statistically. The study was limited by the availability of data, however, it was justified since it included the whole population of’ ‘Narimaster’.