閉鎖循環式養殖システム : 魚工場

概要

論文の詳細を見る
Fish production in closed recirculating systems, which makes reduced discharge of organic and inorganic wastes possible, is considered to be one of the promising approaches for sustainable development of aquaculture. The system also has advantages in preventing natural disaster such as red tide from damaging fish culture, in accelerating fish growth, and in producing safe fish as food. A pilot scale culture system of 10 m3 in total water volume was developed, and rearing experiment of Japanese flounder Paralichthys olivaceus was carried out. The system consists of a fish tank, settling tank, drum screen filter, submerged biological filter, heating-cooling unit, oxygen generator, blower, and UV-irradiator. In the rearing experiment, 1015 fish of 2 g in body weight were reared for 259 days with pellet diet. Fish grew to 456 g in mean body weight with good survival rate (85%) and feed efficiency (97%). Maturation and spawning of Japanese flounder were also successfully demonstrated in closed recirculating system with considerably small volume of culture water. Fish production with the system will become popular by improving its economical efficiency.
生態工学会の論文
2004-04-30