Crucian Carp Fingerling Production in Ponds in Harbin Using Soy-Based Feeds and Zero Water Exchange Technology
Region: Northeast AsiaDownload
A feeding trial was conducted in Harbin, Heilongjiang Province, to demonstrate fry to fingerling production of crucian carp using the ASA 80:20 pond production model and soy-based feeds, together with zero water exchange technology. Crucian carp were stocked in three, 3.5-mu ponds at a density of 4,000 crucian carp and 1,000 silver carp per mu. Crucian carp grew from 0.25 g to an average weight of 31.8 g per fish in 104 days of feeding. Crucian carp FCR with the ASA soymeal- based fry and fingerling feeds averaged 1.18:1. The average survival rate for crucian carp was 77.3%. Average net economic return was RMB 248 per mu, for an average return on investment (ROI) of 27%. Results of the feeding demonstration showed that it was feasible to culture crucian carp fingerlings with the ASA feeds and 80:20 model, together with zero water exchange technology. Crucian carp exhibited good growth performance and FCR with the ASA soymeal-based feeds and 80:20 production technology. The Pengze crucian carp from Jiangxi Province tested in this trial were found to have a poorer feeding response than other varieties of crucian carp previously tested, such as the Yuyi. The use of zero water exchange was found to be of critical importance in water restricted regions such as northeast China, and its application is recommended for fish production throughout this region.