Girzheva O. The influence of rapeseed cake, enriched by mineral substances, feeding on the productivity quality of astrakhan sheep.

The thesis is dedicated to the problems of using rapeseed cake and higher levels of on 25% and 50% from existents norms sulphur, selenium, iodine and silicium tends to improve biological value of diet and reduction of it s costs. In the experiment with astrakhan rams and ewes of astrakhan breed established that using of rapeseed cake instead 25% by mass of barley and higher levels of macro-and microelements promote coefficient of digestion of organic matter of diet, improve exchange of nitrogen and mineral elements and some biochemical and blood indices. As a result average daily growth of lively weight, qualitative and quantitative indices of meat, as well as wool shearing and physical and chemical properties of wool. It has been proposed to include 25 % by mass rapeseed cake and higher levels of sulphur, selenium, iodine and silicium in the diet of astrakhan sheep.