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冬季,天气寒冷,不少生产单位认为鱼类不会得病,因而忽视了鱼病的防治。其实有许多病菌和寄生虫能适应低温环境、并大量繁殖,另外囤养越冬的鱼类较密集,病菌易于传播,因此常常能在短期内导致越冬鱼发病和死亡。下面介绍几种冬季易出现、危害性较大的鱼病的防治方法: 一、水霉病:此病主要发生在鱼类刚进越冬池的一段时间内,因并塘时鱼体受伤,鳞片脱落,水霉菌入侵所致。鱼体伤处长满灰白色的水霉菌丝、游动缓慢、食
In winter, the weather is cold, and many production units think that fish will not get sick and thus ignore the prevention and treatment of fish diseases. In fact, many germs and parasites can adapt to low-temperature environment and multiply, in addition to more intensive winter stocking fish, bacteria spread easily, so often in the short term lead to the incidence and mortality of overwintering fish. Here are several easy to appear in winter, the more harmful fish disease prevention and control methods: First, the water mold disease: the disease occurs mainly in the winter fish pond just entered the period of time, and Tong Tong when the fish were injured, scales Off, caused by water fungus invasion. Fish injury covered with gray water mold mycelium, swimming slowly, food