EN
The study evaluated the effects on the content of vitamin E in chicken breast meat when this vitamin was contained in natural feed components and when acetate dl-α-tocopheryl was added to the diet. In three experiments on broiler chickens from 22 to 42 days of age, diets containing mixtures of rapeseed oil and animal or fish fat were supplemented with various amounts of dl-α-tocopheryl acetate (5-300 mg/kg). The content of vitamin E in broiler’s breast meat increased in relation to an increase in dl-α-tocopheryl acetate in the diet. The practical importance of diet supplementation was ascertained at a level of 150 mg dl-α-tocopheryl acetate/kg. In this case an increase of α-tocopherol concentration in breast meat to 7-7.5 mg/kg was noted.