Pond Production of Wuchang Bream Fingerlings with Soy-Based Feeds
Region: Northeast AsiaDownload
A feeding trial was conducted in Changzhou, Jiangsu Province, to demonstrate fry to fingerling performance of wuchang bream using the ASA 80:20 pond production model and ASA soymeal-based fry and fingerling feeds. Fish were stocked in three, 5.0-mu ponds at a density of 9,000 wuchang bream and 1,000 silver carp per mu. Wuchang bream grew from 0.1 g to an average weight of 50.8 g per fish in 137 days of feeding. Gross production averaged 306 kg/mu for wuchang bream and 62 kg/mu for silver carp. Average survival rates for wuchang bream and silver carp were 67% and 43%, respectively. Low survival rates were the result of under-stocking. Wuchang bream FCR with the soymeal-based feeds averaged 0.93:1. Average net economic return was RMB 652 per mu, for an average return on investment (ROI) of 33.6%. Results of the feeding demonstration showed that wuchang bream exhibited good growth, feeding behavior and FCR with the ASA soymeal-based feeds and 80:20 production technology during the fry to fingerling phase. In addition, the soy-based extruded feeds yielded good water quality, lower labor costs, and allowed production of healthy and disease-free fish without the use of drugs or chemicals.