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一、水霉病:易流行于早春季节。症状:鱼体表面局部鳞片脱落,体表发霉或长毛。游动失常,食欲下降,逐步消瘦死亡。一般鲢鱼发生比较普遍。病因:主要是冬春拉网捕捞运输及放养过程中造成鱼体受伤,导致病源侵入鱼体发病。防治:(1)在捕捞运输和放养过程中,注意不伤鱼体。(2)在投放鱼种时一定要用5%的食盐水浸洗鱼体10分钟左右。鱼体消毒时间可根据气温和鱼的承受能力而定。(3)开春后每亩每米水深用20至30千克生石灰或0.75千克漂白粉兑水全池泼洒。二、烂鳃病(又称乌头病):流行季节一般在4—10月份。草青
First, water mold: easy to prevalent in the early spring. Symptoms: local scales shed on the surface of the fish body surface or hairy. Wandering disorders, loss of appetite, gradual weight loss death. Common silver carp is more common. Etiology: mainly in winter and winter net fishing transport and stocking caused by fish injury, leading to the pathogens invade the fish pathogenesis. Prevention: (1) In the fishing and stocking process, pay attention not to hurt the fish. (2) The fish must be immersed in 5% salt water for about 10 minutes when feeding the fish species. Fish disinfection time can be based on the temperature and the ability of the fish may be. (3) spring per acre per meter of water with 20 to 30 kg of lime or 0.75 kg of bleach watered Quanchiposa. Second, rotten gill disease (also known as aconite): epidemic season generally in 4 - October. Grass green