The further development of meat poultry farming is due not so much to the availability of resource-aving technologies and knowledge-intensive industries, as to the optimization of the base of feed. Sources of high-quality protein as well as enzyme complexes, specialized energy additives, feed stimulants of growth rate, as well as vitamin and mineral premixes come to the fore. The purpose of the research was to study the use of the antioxidant Bisphenol-5 in the feeding of broiler chickens. The control was the broilers that were given a complete compound feed according to the age and feeding standards of broiler chickens on the farm. Poultry of the 1st experimental group in addition to the main diet received the additive Bisphenol-5 at a dosage of 0,5 μmol per 1 kg of live weight or 0,0002 % of weight of compound feed; broiler chickens of the 2nd experimental group were additionally input with Bisphenol-5 at the dosage of 1,0 μmol per 1 kg of weight or 0,0004 % of weight of compound feed; broilers the 3rd experimental group was input 2,0 μmol/kg of live weight or 0,0008 % of weight of compound feed; the 4th group received 4,0 μmol/kg of live weight or 0,0015 % of weight of compound feed of the studied antioxidant Bisphenol-5. The optimal dose of feeding the new fat-soluble antioxidant Bisphenol-5 to broiler chickens was 2,0 μmol/kg of live weight or 0,0008 % of weight of compound feed has been proved and justifi ed. The conducted studies have convincingly proved that in order to improve the assimilation of nitrogen in the diet, increase its deposition, and, consequently, increase the growth rate of broilers it is necessary to add the antioxidant Bisphenol-5 in the dose of 2,0 μmol/kg of live weight or 0,0008 % to the weight of compound feed.