PRODUCTIVE AND INTERIOR INDICATORS OF KALMYK BEEF CATTLE BULLS IN THE FOOTHILL ZONE OF DAGESTAN

Abstract

The results of the cultivation of Kalmyk cattle bulls of different birth periods in the conditions of the foothill zone of the Republic of Dagestan are presented. It was noted that the young of the I – spring season of birth to weaning at the age of 8 months had a live weight of 182.1 kg, and the peers of the II group reached 195 kg. The differences in live weight indicators in bulls of the winter birth season were 12.9 kg or 7.1 % more at P≤0.05. At 18 months of age, bulls of the winter birth period with a live weight of 454.4 kg were removed from fattening, and peers 425.8 kg, respectively. The advantage of bulls of the winter period of birth in live weight over their peers was 28.6 kg, or 6.7 % (P≤0.001). Animals of the winter birth season also outperformed their peers in average daily growth by 51 g, or by 6.8 %. The animals of the winter period of birth had heavier carcasses with uniform watering compared to the bulls of the spring period of birth. According to the mass of the paired carcass, the difference was 22.01 kg, in favor of the young animals of the winter period of birth, or it was 9.9 % more in comparison with the bulls of the spring period of birth. At the same time, the slaughter yield was 56.6 % for the first group, and 58.2 %, for the second group, or it was in favor of the bulls of the experimental group of the winter period3a4 birth by 1.6 %. It has been established that animals of the winter birth season, fed using the cow-calf technology in the foothill province of Dagestan, have higher productivity indicators compared to analogues of the spring period.