The study was conducted at Adami Tulu agricultural research center on 18 two years F1 male calves of HF cross with Arsi cows of 112.60 kg average initial body weight during the year of 2020/2021. The objectives of the study were to investigate the effect of different dietary rations on the growth performance of crossbred male calves and to identify the most economical feeding dietary ration. hree dietary treatments rations (T1=8 hrs Grazing+20% molasses+40% wheat bran+40% Noug cake, T2=8 hrs Grazing+20% maize grain+45% wheat bran+35% Noug cake, and T3=8hrs Grazing+65% wheat bran+35% cottonseed cakes) were evaluated. Complete Randomized Block Design was used to assign six cross-bred male calves randomly to three dietary rations. All experimental calves were supplemented dietary rations based on their body weight at the rate of 2.5% of their live body weight throughout the experimental period. The results indicated that there was no significant difference in average daily weight gain and total weight gain between crossbred young bulls fed with dietary the three rations. Partial budget analysis indicated that there was no significant difference among cross-bred bulls fed with three dietary feed rations. But From the partial budget analysis, it was observed that experimental bulls fed on T3 are more feasible economically as compared to bulls fed on T1 and T2. Further investigation needed on fattening HF-crossbred bulls under different levels of ration offering was recommended to evaluate their potential for economic profitability based on their weight gain.
