ADAPTIVE CHANGES IN THE ORNITHINE CYCLE AND AMINO ACID SYNTHESIS IN SHEEP LIVER WITH DIFFERENT MEAT PRODUCTIVITY

Abstract

The aim of the research was to study the ornithine cycle as the process of fixing ammonia and the formation of urea in the body of highly productive animals. In our experiments, we used a protein-deficient diet and urea as a nitrogen substitute for nitrogen-containing materials in the diet to reveal the mechanism of action of urea on animals, in particular on the biochemical processes of the ornithine cycle. There are some differences between Bukovinian sheep of the Askanian meat-wool breed and outbreds in terms of the ability to build muscle tissue. Our study reveals that the slaughter yield and the average daily gain consumtion of Bukovinian-type meat of the Askanian meat-wool breed was higher in summer and in autumn, compare with purebred sheep