Fats/oils are integrate parts of poultry diets and their price has shown an abundant increase in the last decades due to shortage of oilseeds production in Egypt as well as the competition between human and animal. Thus, utilizing the by-products of oils/fats industry would help towards decreasing feeding costs, and reducing the amount of oils/fats used in animal production industry and this need to supplementation antioxidants in diets to prevent oxidation.