Effect of Seasonal Changes on Antioxidant Vitamins (A, E, C) and Mda in Levels of the Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Grown in Van City, Catak District

Abstract

The present study was aimed to determine the seasonal changes of malondialdehyde (MDA), vitamin retinol (vitamin A), alpha-tocopherol (vitamin E) and ascorbic acid (vitamin C) levels. For this purpose, fishes were collected in the second week of the second month in each four seasons. Fishes were fed with the same food for one year. Fishes were selected from the same pool. Statistically significant differences were found between the levels of vitamin A, vitamin E, vitamin C and MDA (p<0.0001) levels. Consequently, it was determined that the levels of vitamin (A, E, C) showed significant differences between seasons and there was a marked increase in the vitamin levels especially in the winter season. The present study is the first study in this region. More studies are required to clarify the results.