Productivity of young sheep of the southern meat breed and using a new type created Katum sheep

Abstract

Feeding rations and nutrient digestibility in purebred and crossbred lambs of the southern meat breed are shown, as well as the dynamics of body weight from 3 to 8 months of age and the results of the animals’ control slaughter. The digestibility of feed nutrients was highest in the crossbred lambs of group 4, with 7/8 blood of the Katum breed. The difference in the digestibility of organic matter and crude protein between animals of groups 1 and 4 was 5.49 and 5.67 absolute percent, respectively. For dry matter and crude fiber, the difference was 5.47 and 4.96 absolute percent, and it is highly significant. A significant increase in daily gains was observed in crossbred lambs of different bloodlines from katumskaya rams (from 223 to 245- 267 g) and a reduction in feed costs per 1 kg of body weight gain. The results of the control slaughter showed that the difference in pre-slaughter weight between purebred and crossbred animals was 5.7; 8.4; 11.5 kg or 10.4; 15.3; and 20.9%. For the weight of the carcass, the difference between the groups of rams was 3.72; 5.52; and 7.97 kg or 13.2; 19.5; and 28.2%, with a significant and highly significant difference.