The influence of filial generation of Sahiwal Hereford steers on liveweight, liveweight gain, carcass weight and fat thickness.

There is a lack of information on the comparative liveweight performance of first generation Bos indicus-Bos taurus crossbreds and second generation crossbreds produced by inter se joining first generation crossbreds. It is commonly assumed that there will be a marked decline in productivity from first to second generation as theoretically the heterosis of the first generation is halved in the second and subsequent generations. The decline in the second generation has been clearly shown for reproductive performance in BrahmanBritish crossbreds (Seifert and Kennedy 1972; Cartwright 1973) but published information concerning liveweight performance is not as consistent.