The Antioxidant Vitamin (A, C, E) and the Lipid Peroxidation Levels in Some Tissues of Juvenile Rainbow trout (Oncorhynchus mykiss, W. ۱۷۹۲) at Different Oxygen Levels

In this study, the malondialdehyde (MDA) levels in the muscle, liver and kidney tissues and the antioxidant vitamin (A, C, E) levels in the muscle tissue of juvenile rainbow trout were investigated under different oxygen levels (۳.۵ mg O۲/l, ۴.۵ mg O۲/l and ۷ mg O۲/l) at the end of the ۸ hour trial. Fish (initial weight and length, ۳۰.۱۹±۲.۲ g and ۱۳.۱۵±۰.۲۲ cm, respectively) were distributed into ۹ fiberglass rectangular tanks. The highest MDA level of all tissues was obtained in ۳.۵ mg O۲/l (p۰.۰۵). But the highest muscle vitamin C and E concentrations were obtained in ۷ mg O۲/l. (p<۰.۰۵), followed by ۳.۵ mg O۲/l, while the lowest muscle vitamin C concentration was obtained in ۴.۵ mg O۲/l. (p<۰.۰۵).