The experiment was conducted on 640 Cobb chickens allocated to 16 groups, 5 replications of 4 males and 4 females each. From 22 to 42 days of age the chickens were fed diets containing 50 g of rapeseed oil and 0, 3, 5 and 8 g of fish oil (FO) and were supplemented with 0, 40, 150 and 300 mg · kg^-1 of α-tocopheryl acetate. At the end of the experiment the chickens were killed and breast meat was analysed for PUFA and α-tocopherol content. At a dietary level of 5 g·kg^-1 or more of fish oil, the EPA and DHA content in breast meat lipids increased and the PUFA n-6/n-3 ratio declined. Graded levels of vitamin E added to the diet increased the α-tocopherol content in meat in a dose-dependent manner. An interaction was not found on the effect of vitamin E and FO in the diet and PUFA in meat.