Otchenashko V. 3.Productivity and exchange of substances at the hens - layers at enrichment of mixed fodders by vitamin E and selenium.

3. The dissertation is devoted to study of productive qualities, digestibility of nutritious substances and biochemical parameters at the hens-layers. The object of research chooses process of use of high levels of vitamin E in a feeding of animals. The purpose of work consists in an establishment of influence of high dozes of vitamin E in a combination to the additives selenium in mixed fodders of various structure on efficiency and exchange of substances at the hens -layers . The tasks, put in work, were decided experimentally with use zootechnical, biochemical, biophysical and statistical methods of researches. The character of changes in parameters of productivity, digestibility of nutritious substances and physiological condition a bird and the optimum structure mixed fodders by the purpose of use them in feeding of the hens for reception eggs with the raised food properties is determined. Sphere of use - poultry farms of Ukraine.