FIELD: agriculture; fish farming.
SUBSTANCE: invention relates can be used for feeding fish. A thin layer of feed is sprayed with ultrafine zinc particles obtained by electrical explosion of a conductor in an argon atmosphere, 90 nm in size, in an amount of 10 mg/kg of feed, pre-treated with ultrasound in distilled water for 30 minutes at a frequency of 35 kHz.
EFFECT: invention improves the productivity and resistance of the fish organism.
1 cl, 1 dwg, 1 tbl
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