Bulls meat productivity grown for organic beef

The purpose of research is to study the meat productivity and quality indicators of meat raw materials from bulls of different breeds grown under moderate-intensive technology. The studies were carried out in the conditions of the steppe and foothill raw materials zones of the ZDMK Tikhoretsky Branch of DANONE RUSSIA JSC in the Southern Federal District on Aberdeen-Angus, Hereford, Black-and-White and Red Steppe breeds. The cultivation technology complied with the requirements of GOST. From experimental animals at the age of 15 months, carcasses of the first category were obtained, the average pre-slaughter weight of which was 462.1; 478.8; 423.3 and 431.4 kg respectively. The slaughter yield was up to 58.2 %. The content of raw internal fat ranged from 3.5 to 8.6 kg, which depended on the breed characteristics of the animal. The amount of raw fat in relation to the pre-slaughter weight was 1.04; 1.8; 0.8 and 1.25 %, respectively. In the average sample of carcass meat, the mass fraction of moisture did not have significant differences and amounted to 70.2-72.5 %. A higher fat content was observed in the carcasses of bulls of meat breeds (Aberdeen-Angus and Hereford), which amounted to 8.7 and 8.1 %. The carcasses of the Aberdeen-Angus young animals, which were more juicy and fragrant, stood out for the best taste qualities. The biological value of raw meat largely depends on the content of proteins, fats, amino acids in it. The content of tryptophan and hydroxyproline can be considered as the main biological markers; therefore, a protein-quality indicator was determined. Growing young animals of Hereford, Aberdeen Angus, Red Steppe and Black-and-White breeds in the steppe and foothill raw material areas of the ZDMK Tikhoretsky branch of DANONE RUSSIA JSC in the Southern Federal District makes it possible to obtain raw materials that meet safety indicators for use in baby food.