Studies on fish aquaculture based on the animal welfare.

本研究旨在探讨鱼类养殖中的动物福利问题。采用自饲系统饲养鲑科动物，并对动物福利的五种自由度（免于饥饿、免于不适、免于疼痛、免于伤害或疾病、免于表现正常行为、免于恐惧和苦恼）进行了检查。结果表明，通过多种鱼类的混养和在鱼缸中设置遮蔽物，可以实现基于动物福利的鱼类养殖。

The current study was made to consider the animal welfare in fish aquaculture. Salmonidae were reared with self-feeding system, and five freedoms of animal welfare (Freedom from Hunger, - Discomfort, - Pain, Injury or Disease, - Express Normal Behaviour, - Fear and Distress) were examined. The results showed that fish aquaculture based on the animal welfare was possible combined with the duoculture of different species and the installation of shelter in fish tank.