Yanovych N. Peroxidation processes and fatty acids composition of common carp tissues at different concentration of Copper and Zinc in the water and diet.

The activity of main antioxidant enzymes (superoxide dismutase, glutathione peroxidase and catalase), concentration of Copper and Zinc, primary and secondary lipid peroxidation products, non-esterified fatty acids, anionic fatty acids and fatty acids of total lipids in the gills, liver and skeletal muscles of carp under influence of Copper concentration in the water 1 and 2 g 10-3/l and Zinc concentration in the water 10 and 20 g 10-3/l and Copper content in the diet 8 and 16 g 10-3/kg and Zinc content in the diet 100 and 200 g 10-3 /l were investigated. It was established, that when increasing of Copper and Zinc concentration in the diet, in the gills, liver and skeletal muscles the efficiency transformation of linoleic and linolenic acids of total lipids to their more unsaturated and elongated derivatives is increasing. At the same time, in mentioned above tissues of carp concentration of fatty acids of total lipids is increasing. It was mentioned, that after increasing of Copper and Zinc concentration in the water, carps looses their bodyweight more intensively. Carp bodyweight increases the most at Copper and Zinc content in diet 8 and 100 g 10-3/kg respectively.