近年来,由于集约化淡水养殖的普及导致鱼类肝病大量暴发,造成严重的经济损失,而淡水鱼类的肝病易被养殖户所忽视,并且耽误治疗。一、淡水鱼类肝病的病因1.营养性因素饲料中蛋白质、脂肪、糖类等营养物质过多或缺乏;饲料中营养指标与养殖对象不适合;饲料蛋白质含量过高;等等。例 In recent years, due to the popularization of intensive freshwater aquaculture, a large number of fish liver disease outbreaks have caused serious economic losses. However, liver diseases of freshwater fish are easily overlooked by farmers and have been delayed in treatment. First, the etiology of freshwater fish liver disease 1. Nutritional factors Feed protein, fat, carbohydrate and other nutrients too much or lack of feed nutrition indicators and breeding objects are not suitable; feed protein content is too high; and so on. example