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今年盛夏至初秋,我县多个乡镇及重点水域的养殖户纷纷反映,其养殖池塘的白鲢发病,发病程度不同,随后笔者赶赴多个点调查,发现全县范围内大面积暴发打印病,对象除偶有花鲢外,皆为白鲢,规格在0.5kg￣2kg,发病率平均40%,高者达70%,病鱼症状轻重不一,有表现轻度充血,多数表现为肌肉
From midsummer to early autumn of this year, farmers in multiple townships and key waters in our county have all reported that the silver carp in their breeding ponds has a different degree of morbidity and disease. After that, the author rushed to several points to investigate and found outbreaks of large-scale outbreaks across the county, In addition to occasional flowers of silver carp, all silver carp, specifications 0.5kg ~ 2kg, the average incidence of 40%, the highest up to 70%, diseased fish symptoms vary in severity, showed mild congestion, the majority of the performance of muscle