Vitamins A sub(1), A sub(2), and E in Minks Exposed to Polychlorinated Biphenyls (Aroclor 1242 super( registered )) and Copper, via Diet Based on Freshwater or Marine Fish

Minks were fed diets differing in the content of vitamins A and E and the composition of fatty acids, and the effects of diet on subsequent response to PCB and/or copper exposure were assessed. Two basal diets, one based on freshwater fish and the other based on saltwater fish, were used. Results showed that the basal levels of tissue vitamins A sub(1) and E were higher in the animals on the marine control diet than in those on the freshwater control diet. PCB exposure caused a significant decrease in the hepatic concentration of vitamin A sub(2) in both males and females on the freshwater diet, and the levels of vitamin E were also decreased significantly. Exposure to PCBs increased the vitamin A sub(1) levels in the adipose tissues of minks on the freshwater diet, but decreased the levels in minks on the marine diet.