EXTERIOR FEATURES AND MANIFESTATION SEXUAL DIMORPHISM IN YOUNG KAZAKH BALD AND ABERDEEN-ANGUS BREEDS
The article presents the results of studies on the study of exterior features and the manifestation of sexual dimorphism in young Kazakh white - headed and Aberdeen - Angus breeds, the average live weight of experimental bulls at birth ranged from 25.4 to 28.8 kg and at the age of 6 months from 182 to 196.5 kg and was at the level of elite class requirements. The highest average daily weight gain was distinguished by the Kazakh white - headed breed animals, the lowest index was Aberdeen - Angus. The animals of the Aberdeen - Angus breed distinguished themselves by a high percentage of relative growth. The data on the exterior of young animals are also given, so the Kazakh white - headed bulls in comparison with their peers had higher indicators for a number of basic measurements of exterior articles. At the age of 6 months. when beaten, they surpassed their peers in height at the withers by 12.9 % of the Aberdeen - Angus breed. In height in the sacrum - by 9.8 %, respectively. By the oblique length of the trunk, Kazakh white - headed bulls surpassed Aberdeen Angus bulls by 2.7 %. Heifers of the Kazakh white - headed breed also had higher indicators for a number of basic measurements of articles at the age of 6 months. In height at the withers, they surpassed their Aberdeen - Angus peers by 13.3%. In height in the sacrum - by 12.1 %, respectively. When studying the growth dynamics and exterior features of the studied young animals, there was a clear manifestation of sexual dimorphism, the bulls of the studied breeds significantly exceeded the indicators of heifers in all major indicators.