Introduction. In the course of the conducted scientific research, the main zootechnical and economic indicators were determined, on the basis of which the effectiveness of using the antioxidant feed additive "Dihydroquercetin" in the cultivation of broiler chickens was established, which ensured the receipt of additional products, reducing its cost and increasing the profitability of poultry meat production. Objective. To evaluate the effectiveness of raising broiler chickens using the antioxidant feed additive “Dihydroquercetin” in their feeding. Materials and methods. The object of the experiments were broiler chickens of the COBB-500 cross, which received the antioxidant feed additive “Dihydroquercetin” as part of the main diet during their cultivation. The poultry of the I control group received only compound feed (the main diet), for chickens of the II experimental group, an antioxidant was additionally injected into it at a dosage of 0.5 g per 100 g of compound feed, III – 0.75 g and IV – 1 g per 100 g of compound feed. The duration of the experiment was 40 days. Research results, discussions. The results of the experiment showed that due to the use of a feed additive, the safety of broiler chickens during the fattening period was 70 % in the I control group, and in the experimental ones: in the II – 90 %, in the III and IV ‒ 100 % safety of poultry was achieved. In the course of the study, it was found that the feed costs per head in the experimental groups of poultry were higher than in the control group, due to an increase in their productivity. But these costs are offset by an increase in the conversion of feed into products and the achievement of higher live weight by chickens at the end of the growing period. This created the opportunity to obtain additional profit and, accordingly, provided an increase in profitability by 2.3, 2.2 and 3.8 %. Consequently, revenue from the sale of products obtained from the experimental broiler chickens of groups II‒IV amounted to 1.42‒2.86 thousand rubles more than in the control. Conclusion. An assessment of the effect of the studied levels of introduction of a feed additive into the basic diet, when raising broiler chickens, objectively indicates that, despite the additional costs associated with the purchase of dihydroquercetin, its use turned out to be very effective. The obtained results showed the possibility of growing poultry without the use of antibiotic drugs and growth stimulants, and made it possible to increase the environmental friendliness of the products obtained, their safety for the consumer. This proves the relevance and prospects of using this biologically active substance in the poultry industry.