EXPERIENCE OF GROWING MARKETABLE PADDLEFISH IN POND POLYCULTURE OF FOREST-STEPPE ZONE
Authors: Hankevych B., Tretyak О., Onuchenko O., Bazaeva А., Chuzhma N.
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Growing of marketable production of North American zooplankton-eating representative of sturgeon species — paddlefish was conducted at polyculture with cyprinids (common carp, silver carp, bighead carp, grass carp) in ponds located in the central region of Ukraine. There was used a limited feeding of carp by artificial feeds. Stocking density of 1–3-year paddlefish with average bodyweight from 86,2 to 3345,0 g in ponds with area 72–74 ha varied within 59–85 ind./ha with total stocking density of all fishes 1568–2402 ind./ha. As a whole, environmental conditions of ponds corresponded to biological requirements of studied polyculture objects, average seasonal zooplankton biomass was within 3,9–5,8 g/m3. As a result, paddlefish production was 48,6– 224,3 kg/ha with total fish productivity in ponds from 1067,1 to 1248,8 kg/ha. Average seasonal paddlefish bodyweight gains increased with age from 1,22 до 2,47 kg at average bodyweight of age-2 fish — 1,31–2,14 kg, age-3 fish — 4,26 kg, age-4 fish — 5,82 kg.