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丹麦多采用循环水养殖鳗鲡,当鳗苗入池前,先用浓度为300毫克/升的甲醛溶液浸洗30分钟,以预防体外寄生虫。但由于放养密度较高,所以鳗病时有发生,现将常见几种鳗病的情况及防治方法介绍如下: 水霉病鳗鲡在分养等操作后常会引起水霉的感染。防治方法:在每升水中加0.2毫克孔雀石绿。车轮虫病受感染的鳗,其颌及鳃部有出血症状。治疗:每升水加甲醛20-60毫克。小瓜虫病病原体为多子小瓜虫,主要
Denmark recycle aquaculture eels with more water, when the eel into the pool, first with a concentration of 300 mg / l of formaldehyde solution for 30 minutes to prevent in vitro parasites. However, due to high stocking density, eel disease occurs from time to time, and now several common cases of eel disease and prevention and treatment methods are described below: Watermelon disease eel 分 often cause water mold infection after operation. Prevention and treatment methods: add 0.2 mg of malachite green per liter of water. Eel infected with rotifer disease has bleeding symptoms in the jaw and gills. Treatment: add 20-60 mg of formaldehyde per liter of water. Small asiatica pathogens for small child Cucumber, the main