The meat productivity and quality of meat red steppe and black-and-white breeds cows
Currently in Russia, the major quantity of beef produced in dairy cattle. With more than 60% of the beef get from the slaughter of cull cows. Most of these cows are represented by crosses of different generations from crosses with bulls red-spotted and black-and-white Holstein breed. Questions concerning the quality of the meat and the main indicators of meat production in these animals are not fully understood. Presented scientific and practical interest to conduct a comparative evaluation of meat productivity of the cows of red steppe and black-and-white cattle. Research was conducted in the breeding plant "Lenin's path" the Krasnodar region of culled cows, selected in the groups with regard to age at calving, body type, genotype. Cull cows before slaughter fattened up for 40 days on the technology adopted in the economy. All studies conducted in compliance with applicable methods, including control slaughter of animals tested. Varietal composition of the carcass examined after cutting five cuts. As a result of researches it is established that for the same carcass yield of carcasses (50,3 - 50,6%) on all quality parameters of meat productivity advantage was for crossbred cows - red steppe breed Holstein red-and-white. As noted, a higher content in the pulp of these cows proteins (0,57%) and less protein stroma (1,99%). In both groups of experimental animals after feeding high internal deposition of fat at the level of 17,1-20,5% to slaughter weight. High deposition of visceral fat after crocodingo feeding cull cows associated with high material costs questioned the non-conforming to the carrying out of this process of reception. The yield of the most valuable cuts amounted to cull cows compared genotypes 58,03-58,04%, that is, the group differences are not marked. In General meat quality of cull cows red steppe and black-and-white breeds meet the requirements of the modem consumer market.