淡水循環式養殖システムにおける物質の蓄積とその利用

概要

論文の詳細を見る
Recirculating fish culture system has some benefits i.e., preservation of natural water environment and fish resources. Removal of the waste excreted from reared fish is one of the most important issues and the waste is a limiting factor for water reuse. This paper is based on results of our investigation into accumulation and utilization of substances in a recirculating system for tilapia culture. Accumulation of substances concentrated in rearing water or solid waste, and in which each element shows different proportion. As for the utilization of aquacultural waste, new techniques of chemical digestion of solid waste for production of liquid fertilizer and biomass conversion with artificial food chain including phyto- and zooplankton have been established. The technique is to convert the waste into zooplankton biomass as live food for larval fish, and this artificial conversion using aquatic animals has been successful in the experimental stage. The conversion system is expected to use for seed production of reared fish in a recirculating system.
生態工学会の論文
2007-07-31