Effect of dietary ascorbic acid supplementation on tissue vitamin A and vitamin E levels and antioxidant enzyme activity in standard and sapphire mink (Neovison vison)

摘要

The effect of high content of dietary ascorbic acid (vitamin C) on vitamin A and the antioxidant system, vitamin E, the level of glutathione (GSH) and enzymes, superoxide dismutase (SOD) and catalase (CAT) in mink tissues has been studied. There weretwo experimental groups of mink, sapphire and standard brown, and 100 mg of vitamin C per mink were supplemented to their diet for 20 days. The study has shown that the vitamin A concentration in the tissues of the experimental mink decreased compared with the controls. The vitamin E content in serum and many tissues of both experimental groups of mink was higher than in the control groups. The concentration of vitamin E in the kidney of the experimental sapphire mink (10.66+-1.6 mug/g) was significantly lower in comparison with the control group (36.87+-14.16) and the experimental brown mink (20.97+-6.12). SOD and CAT activities and level of GSH changed slightly. The results show that in sapphire mink the vitamins A and E level changed more intensively than in standard mink with the ascorbic acid high dose.