육상어류양식장의 고형오물을 발효시켜 만든 사료를 급여한 해삼(
Apostichopus japonicus)의 성장
Effects of Fermented Fecal Solid Diets on Growth of the Sea Cucumber
- DOI : 10.5657/KFAS.2016.0161
- Publish: Korean Journal of Fisheries and Aquatic Sciences Volume 49, Issue2, p161~167, 30 Apr 2016
The effects of fermented fecal solid diets on the growth of the sea cucumber
Apostichopus japonicuswas investigated in a recirculating aquaculture system (RAS) during a 90-day experiment at 16.5-17.5℃, 32±0.5 psu salinity, pH 7.9-8.2, and 5.2-7.1 mg/L dissolved oxygen. The aim was to determine the feasibility of RAS fecal solid waste as a renewable feed for A. japonicus. In this study, unfermented fecal solid (UF), fermented fecal solid (FF), and commercial feed (CF) diets were used. The results showed that the growth rate did not differ significantly ( P>0.05) between A. japonicusfed FF and CF; however, the growth rates of A. japonicusfed FF and CF were ~50% higher than that of those fed UF. Thus, utilization of fecal solid by A. japonicusmay overcome the problem regarding accumulation of RAS waste. Use of a fermentation process would improve utilization of fecal solid as a renewable food source for A. japonicus.
Fecal solids , Sea cucumber , Apostichopus japonicus , Fatty acid , Amino acid