Grass Carp Fingerling to Market Growth Performance in Ponds in Harbin on a Soymeal-Based Feed
Region: Northeast AsiaDownload
A feeding trial was conducted at the Jin Shan Bao Fish Farm in Harbin, Heilongjiang Province, to demonstrate the fingerling to market growth performance of grass carp using the ASA 80:20 pond production model and a soymeal-based growout feed in northeastern China. Harbin is located at 46o north latitude. Fish were stocked in two ponds of approximately 5-mu size at densities of 600 grass carp and 100 silver carp fingerlings per mu. Grass carp grew from 60 g to an average weight of 777 g per fish in 138 days of feeding. Gross production averaged 424 kg/mu for grass carp and 87 kg/mu for silver carp. Average survival rates for grass carp and silver carp were 91% and 98%, respectively. Grass carp FCR with the all-plant protein, soymeal-based feed was 1.54:1. Average net economic return was RMB 896 per mu, for an average return on investment of 36.8%. Results of the feeding demonstration showed that grass carp fed well on the extruded, floating feed, and exhibited good growth performance, FCR, survival and economic return with the ASA soymeal-based feed and 80:20 production technology.