ESTIMATION OF BULL-CALVES MEAT PRODUCTIVITY AND QUALITY IN IRKUTSK REGION

Abstract

In the Irkutsk region, beef is obtained from all breeds of cattle. The main share is accounted for by cattle of black-and-white breed, the share of specialized meat breeds is only about 20% of the total volume of beef. Excellent taste characteristics due to the chemical composition of meat. The results of meat quality from the Kazakh white-headed and Hereford breeds testify to their high nutritional value, so the BKP level was 6.34 and 6.48, respectively. The comparing estimation of meat productivity and quality characteristics of meat was carried out. For these purpose the control slaughter was 18 months age. The data analysis revealed a high level of slaughter characteristics of meat bull-calves. The average pre-slaughter weight of one bull-calf of Kazakhskaya belogolovaya breed was 453,77 kg, Hereford breed – 470,21 kg. Differences was 3.62 %, with carcass yield– 53%, and slaughter – 56 %. Correlation of water and dry matter lies within 70/30. Bull-calves meat of Hereford breed contains more protein by 1/27%, fat-1.48, ash – 0.11%. Meat of Kazakhskaya belogolovaya bull-calves breed is somewhat inferior in quality characteristics.