PRODUCTION EFFICIENCY OF COMPETITIVE MEAT RAW MATERIALS FROM BULL-CALVES OF DIFFERENT SPECIALIZED MEAT BREEDS
As a result of researches the different intensity of growth of bulls of the studied breeds is established. Bull-calves of Kazakh white breed, aged 17 months, were better than the team of Russian and Kalmyk hornless breeds, live weight and on 3,53 11,68% and average growth by 4.86 and 10,97%. The results of the control slaughter showed that the mass of paired carcasses of the Kazakh white-headed breed bull-calves in comparison with peers were more by 6,38 and 35,8 kg, and their output - higher by 0,61 and 1,81%. Slaughter yield was higher than their peers hornless Russian and Kalmyk breeds, respectively 1.07 and of 2.29%. The dissection showed that the yield of pulp in the carcasses of steers of the Russian hornless breed was higher than peers Kazakh and Kalmyk breeds, 0.77 and 2.00%. In the pulp Bychkov Russian hornless breed of dry matter contained more than their peers, respectively, 0.56 and 0.47%, protein - 0.25 and 1.04%. In the flesh of their carcasses, in comparison with their peers contained more of the essential amino acid tryptophan, but protein quality was higher by 0.10 and 0.89%. Meat of bulls Russian hornless breed had higher cooking-technological properties.