在食用鱼的高产鱼塘中,鱼的放养密度大,水质肥沃,因而也给病菌及寄生虫的繁衍创造了条件。所以食用鱼高产鱼塘中,鱼病的发病率比自然水面和一般鱼池高得多。因此,认真防治鱼病就成了食用鱼高产生产中的重要措施。一、预防鱼病的措施1.鱼塘彻底消毒鱼塘放养鱼种前,首先要做好消毒工作。目前一般采用生石灰或 In high-yielding fish ponds, the stocking density of fish is high and the water is fertile, thus creating conditions for the multiplication of germs and parasites. Therefore, high-yielding fish in fish ponds, the incidence of fish disease is much higher than the natural water surface and fish ponds in general. Therefore, serious prevention and treatment of fish disease has become an important measure of high-yield production of fish. First, the measures to prevent fish disease 1. Fish ponds thoroughly disinfected fish pond stocking, we must first do a good job disinfection. The current general use of lime or