Abstract
The article presents the results of the evaluation of the slaughter qualities of bulls of different breeds and the directions of productivity. The object of the study were bulls of the red steppe (group I), Simmental (group II) and Kazakh white-headed (group III) breeds. When studying the slaughter qualities of bulls during the control slaughter, the pre–slaughter live weight, the mass and yield of the paired carcass, as well as the internal raw fat, slaughter weight, slaughter yield were established. The obtained experimental material was processed by the method of variation statistics according to N.A. Plokhinsky with the determination of the reliability of the difference using the Student's criterion. It was found that the absolute and relative mass of the paired carcass of Red steppe bulls was 229.6 kg and 53.8%, respectively, young Simmental breed – 269.5 kg and 56.2%, Kazakh white-headed breed animals – 259.2 kg and 57.1%. At the same time, the absolute and relative mass of intracavitary raw fat in group I bulls was 10.6 kg and 2.5%, group II – 13.9 kg and 2.9%, group III – 13.2 kg and 2.9%. As for the slaughter weight and slaughter yield, the value of these indicators was at the level of 240.2 kg and 56.3% for red steppe bulls, 283.4 kg and 59.1% for young Simmental breed, 272.4 kg and 60.0% for Kazakh white–headed breed animals %.
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