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人们在运输鱼种、成鱼时,经常用20PPM浓度的高锰酸钾溶液,在鱼篓等运输工具中浸洗鱼体20—30分钟,以消灭体表及鳃上的细菌及部分寄生的原生动物等。这样做的优点是:鱼体集中、方法简便、用药量少、避免了异地病菌的传入,对鱼体运输中机械损伤的部位也进行了消毒。因而广为水产工作者所采用。 在计算用药量(g)时,通常的做法是将鱼篓截面积乘以水位高度,计算出连水带鱼的体积(M~3),再乘以20g/M~3。这种计算方法在鱼体数量少时,误差不大,但当
People in the transport of fish species, adult fish, often with 20PPM concentration of potassium permanganate solution, fish and other transport vehicles in the dipping fish 20-30 minutes to eliminate surface and gill bacteria and parasites Protozoa and so on. The advantages of doing so are as follows: the fish body is concentrated, the method is simple, the dosage is small, the introduction of bacteria from other places is avoided, and the parts of the fish which are mechanically damaged during disinfection are also sterilized. It is widely used by aquatic workers. When calculating the dosage (g), it is common practice to multiply the cross-sectional area of the baskets by the height of the water level to calculate the volume of the aquatic fish (M ~ 3) and multiply by 20 g / M ~ 3. This calculation method in the small number of fish, the error is small, but when