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养殖方法及其现状随着鳗鱼养殖业的发展,过去均为露天池养殖,现在养鳗转为室内加温饲养管理方法也得到很大的改善。最初室内加温池流水养鳗,每天换水量为2—3次。为了减少生产成本费用,现在养鳗均采用半流水或静水养鳗,每天的换水量不足50％。这一方法用水量减少,但水体中混浊物增多成为解决的问题之一,与此同期设置了沉淀水槽和过滤槽等水质净化装置。据不完全统计静冈县浜名湖地区约百家养鳗饲育方法的调查,露池方式和室内加温式养鳗比例为2:8,而后者占
Farming methods and the status quo With the development of eel aquaculture industry, in the past are open-air pond farming, eel farming is now transferred to indoor heating management methods have also been greatly improved. The first indoor heating pool water eel, change the water every day for 2-3 times. In order to reduce the cost of production costs, are now used eel half water or water eel, change the water less than 50% per day. This method reduces the amount of water used, but increased turbidity in the water becomes one of the problems to be solved. In the meantime, a water purification device such as a sedimentation tank and a filtration tank is provided. According to an incomplete survey of about 100 breeding eels in the Hamamoto Lake area, Shizuoka Prefecture, the ratio of the dew-ponds to indoor-heated eels was 2: 8, while the latter accounted for