Black Carp Fingerling Production with Soy-Maximized Feeds

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Category: Aquaculture

Region: Northeast Asia

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A feeding demonstration was conducted in Harbin, Heilongjiang Province, to evaluate fry to fingerling production of black carp using the ASA 80:20 pond production model and soy-maximized feeds. Fish were stocked in three, 5-mu (0.33-ha) ponds at a density of 4,000 black carp and 1,000 silver carp per mu (60,000 black carp and 15,000 silver carp per ha). Black carp grew from 0.06 g to an average weight of 37.4 g per fish in 99 days of feeding. Gross production averaged 141 kg/mu (2,115 kg/ha) for black carp and 25.4 kg/mu (381 kg/ha) for silver carp. Average survival rates for black carp and silver carp were 94.3% and 67.5%, respectively. FCR for black carp fed the soy-maximized fry and fingerling feeds averaged 0.95:1. Black carp weaned to extruded feed in 4-5 days, and fed aggressively on floating feed pellets. Production results suggest that stocking density in fingerling production ponds can be at least doubled, from 4,000 to 8,000 fish per mu.