The effect of the genotype of young sheep on the nitrogen balance

Relevance. As a result of balance experiments, materials characterizing the effect of genotype and castration of young sheep on protein metabolism were obtained. Methodology . For the purpose of the experiment, groups of experimental young animals were selected: purebred sheep of the Tsigai breed — group I; crossbred sheep of the first generation with the Edilbai breed (½ Tsigai × ½ Edilbai) — group II; purebred boulders of the Tsigai breed — group III; crossbred boulders (½ Tsigai × ½ Edilbai) — group IV. Results. The influence of the genotype and castration of young sheep on the protein metabolism of sheep and boulders of the Qigai breed and its first-generation crossbreeds with the Edilbaev breed has been established. It was found that due to the manifestation of the crossing effect, crossbred sheep of group II surpassed purebred sheep of group I in terms of the nitrogen utilization coefficient from the accepted by 1.39%, from the digested by 1.38%, the difference in favor of the crossbred was 2.68% and 3.87%, respectively. Moreover, the rams used nitrogen better for the synthesis of products than the rolls.