МЯСНЫЕ КАЧЕСТВА МОЛОДНЯКА ГЕРЕФОРДСКОЙ ПОРОДЫ РАЗНЫХ ГЕНОТИПОВ

Abstract

The purpose of the research is Hereford breed calves meat quality improvement by harnessing the potential of the canadian selection bulls. Experiments were performed in LLC «K. H. Polanskoe» Bolshechernigovsk district of Samara region. The subject of investigations was the carcasses of Hereford steers of the breed obtained in the cows insemination of populations of canadian selection bulls stair: Wide Load 391W (group 1), upper Cut 20U (group 2), absolute 49S (group 3) and the descendants of domestic breeding bulls (control group). It was found that the calves of Hereford breed have good meat qualities. Exit steam carcasses in all groups was not less than 56.0% and the yield of pulp – not less than 79.0%. In calves, obtained from canadian selection bulls , meat quality was better expressed. The descendants of imported bulls by mass of steam carcass exceeded the indicators of the descendants of domestic bulls by the figure of 3.7-7.0% on exit of the flesh – 4.3 to 7.7%, they also had the advantage of index meat 2.1-4.2 percent. Canadian Herefords bulls were characterized by a greater mass of most valuable cuts of the carcass. They have plenty of hip part was 4.2 to 10.7 kg more than the domestic descendents. In the relative magnitude of this difference was 13.6 and 5.3%. The researches have allowed to draw a conclusion about expediency of use of canadian selection sires Hereford for improvement of meat quality of local Hereford farms, where this species are bred.