MEAT EFFICIENCY OF BULLOCKS OF THE BLACK PIED BREED FINISHED TO A LOWER SLAUGHTER WEIGHT

Our experiments involved 46 Black Pied bullocks of genotype H1 (minima l proportion of Holstein blood 87.5%) housed in stanchionless sheds an d fed a concentrated diet based on mashed cereals; the average weight of carcass meat was 190 kg, carcass weight 366 kg, age 360 days, carca ss yield 51.9%, daily gain and net gain 1048 g and 552 g, respectively . Using analysis of variance we evaluated the effect of the weight of carcass meat and average daily body gain on the level of selected para meters of meat efficiency. With a higher weight of carcass meat the we ight of hind and forequarters, shank from the hindquarter and shoulder increased highly significantly. The weight of the round and of the ri b roast were significantly higher. The body gain had a highly signific ant effect on a lower weight at slaughter, higher daily gain and net g ain. The carcass weight and weight of the shank from the hindquarter w ere significantly lower, carcass yield was higher.