FIELD: fish breeding.
SUBSTANCE: method is characterized by the introduction of oak bark extract into the feed. To obtain the extract, pre-crushed to a granulometric composition from 70 to 2000 mcm, the raw material of oak bark with a moisture content of no more than 20% is treated with an electrochemically activated aqueous solution, with a silver content of 0.01 mg/l, with a raw material : solution ratio of 1:8-1:15 for 600 seconds with constant stirring. The prepared suspension is extracted with n-hexane in a Soxhlet apparatus.
EFFECT: invention provides increased productivity of carp.
3 cl, 3 tbl
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