FIELD: biotechnology.
SUBSTANCE: invention can be used in feeding broiler chickens as a feed additive. The feed additive includes 4-hexylresorcinol at a dosage of 0.5 mg per kg of live weight per day or 4-hexylresorcinol + gamma-octalactone at dosages of 0.4 mg and 0.1 ml per kg of live weight per day or 4-hexylresorcinol + 7-hydroxycoumarin at dosages of 0.1 mg and 0.15 ml per kg of live weight per day or 4-hexylresorcinol + gamma-octalactone + 7-hydroxycoumarin at dosages of 0.05 mg, 0.15 ml and 0.01 mg per kg of live weight per day.
EFFECT: use of the invention will increase the productivity of broiler chickens, as well as reduce the cost of gaining 1 kg of live weight.
1 cl, 2 tbl, 1 ex
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