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近年来,随着网箱养鱼技术的不断普及,网箱养殖面积逐年增加,出现的问题也越来越多,尤其是鱼类病害,它直接影响着鱼的产量和经济效益。通过近两年对我省白洋淀、黄壁庄水库、王块水库等大型水域网箱养鱼的观察和了解,对网箱养鲤危害较大而且发病率最高面积最广的属鲤鱼烂鳃病。网箱养鲤烂鳃病有两种情况,一是细菌性烂鳃;另一种是由寄生虫引起的烂鳃,有些养殖单位因技术水平及条件的限制不能分辨,故多次施药均达不到治疗的效果。作者通过近两年来的实践把如何分辨及治疗网箱养鲤烂鳃病的方法总结如下: 1.症状细菌性烂鳃的主要症状:病鱼鳃丝腐烂发白,鳃盖骨内表皮充血,中间
In recent years, with the continuous popularization of cage fish farming technology, the area of cage farming has been increasing year by year, and more and more problems have emerged. Fish diseases in particular have a direct impact on fish production and economic benefits. After nearly two years of observation and understanding of fish culture in large-scale water cages, such as Baiyangdian Lake, Huangbizhuang Reservoir and Wangliao Reservoir in our province, the carp gill disease is the most harmful to the cage carp and has the highest incidence rate. There are two cases of gill rot in cages, one is bacterial gill; the other is rotten gills caused by parasites. Some breeding units can not be distinguished due to the limitation of technical level and conditions, so many applications Can not reach the effect of treatment. The author through the practice of the past two years to how to distinguish and treat cage gill rotten gill disease method is summarized as follows: 1. Symptoms The main symptoms of bacterial gill: sick fish gill filaria rot, white gill capillaries hyperemia, intermediate