BIOTECHNOLOGICAL TECHNIQUES AND METHODS IMPROVING QUALITY INDICATORS OF PORK
Biochemical blood factors and the genetic structure of meat genotype animals by the genes RYR-1, PRKAG3 (RN-gene), and H-FABP were studied in young pigs of various breed combinations. It was found that animals with the combinations (BKBxBM)xY, (BKBxBM)xD and (BKBxBM)xL of the RYR-1NN genotype in comparison with the pure-bred analogues of the Belarusian Large White breeds had the larger slaughter yield by 1.1-1.9 bp, the carcass length by 0.6%, the “loin eye” area by 9.3-11.8% and the thinner fat by 17.6-18.9%, respectively. The H-FABPНН genotype frequency, which is preferable in the content of intramuscular fat, varied from 70.0% in animals (BKBxBM)xY to 100% in young animals of a BKBxY combination with the H-FABPН allele frequency of 0.8-1.0. The fattening young pigs of the PRKAG3 II genotype were characterized by the best fat depth and the “loin eye” area - 19.5 mm and 38.4 cm<sup>2</sup>.