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春季,随着水温的上升,水中各种病原体也开始滋生,一定的条件下感染鱼体,引起鱼病。春季鱼类发病的原因有三:其一是经过较长时间的越冬期后,鱼体内积存的营养大部分被消耗,体质瘦弱,抗病力差,易被细菌侵袭;其二是春天捕捞、运输、放养活动较多,由于操作不慎使鱼体受伤,鱼受伤后
In spring, as the water temperature rises, various pathogens in the water also begin to breed. Under certain conditions, the fish are infected and cause fish diseases. There are three reasons for the onset of spring fish disease: one is that after a long period of winter, most of the nutrients accumulated in the fish are consumed, the body is emaciated, the disease resistance is poor, and bacteria are easy to invade. The other is spring fishing, transportation , Stocking activities more, due to improper operation of the fish injured, fish injured