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Various feed additives are used to increase productivity in poultry farming. The purpose of our research was to study the effectiveness of the developed and patented mineral feed additive “Cu-Active” for the prevention of hypocuporosis, increasing the performance and meat quality of broiler chickens. The research work was carried out in the laboratories of the Vitebsk State Academy of Veterinary Medicine and at the enterprise of ОАО “Poultry Farm “Rassvet”. It has been established that the patented mineral feed additive “Cu-Active” is not toxic for the protozoa Tetrahymena pyriformis and has an adsorption activity against sanitary-indicatory microorganisms (the number of mesophilic aerobic and facultative anaerobic microorganisms) at a level of 10.8 mg/g. The experimental poultry meat is of good quality according to organoleptic indices. The resulting carcasses meet the requirements of Grade I. Carcass yield - 71.0%. Saturation of the body with copper contributed to an increase in the natural resistance of the experimental poultry, a decrease in endogenous intoxication and the intensity of natural blood serum fluorescence, and, consequently, the normalization of the liver tissue functional activity. The introduction of a patented additive to compound feed for broiler chickens on the poultry farm contributes to an increase in average daily gains – by 1.9%, ensuring the poultry safety by at least 96.6% and reducing feed consumption by 4.1%. The level of profitability of poultry meat production increases by 0.51%. We recommend introducing the patented additive “Cu-Active” into compound feed for poultry in order to prevent microelementoses, hypocuporosis in particular, at a dose of 0.005%.