Kolomoets O. The regularities in the courses of lipid peroxidation processes and antioxidant defense of hens' organism.

Thesis is devoted to educidation of age peculiarities of lipid peroxidation processes and antioxidant system function of hens - layer organism. It was demonstrated that the high level of LPO products in early postnatal ontogenesis of chicks is caused by not sufficient functional activity of enzyme antioxidant system and excessive tissue vitamin consuming. It's firstly ascertained the higher variability of LPO and antioxidant system parametrers of cross "Belarus-9" hens organism as compared with leggorn breed. It can be the witness of higher aduptive abilites the last one. It was established the intensification of LPO processes during plumage changing and sex mature periods of hens - layer, that caused the decreasing of vitamin provision and antioxidant enzymes activity in tissues of hens organism. It was studed the peculiarites of stibel different doses influensity and growth processes of hens organism. The introduction of stibel and stibel with DMSO increases the eggs productivity, improves the diet quality of eggs. The increasing of vitamin A, carotenoids and decreasing of cholesterol content in eggs yolk is confirmed it. It's elucidated the peculiarites of stibel, stibel with DMSO and distinol preparation influense on proantioxidant state and growth of hens organism. It's proved the expedienty of two - times introduction of reseached antioxidants into the hens-layer ration.