鱼类肝脏脂肪变性,俗称脂肪肝(fatty liver),通常是一种营养性疾病。由于虹鳟养殖的高度集约化以及配合饲料的普遍使用,这种疾病极为常见,使各地养殖生产上经常蒙受重大损失。我所虹鳟鱼试验场饲养的2龄鱼,自7月底至9月中旬,患此病持续大量死亡,高峰期日死亡率0.6％,积累死亡21.9％。本文对虹鳟肝脏脂肪变性的病理变化和机制作一初步研究。 Fish liver fatty degeneration, commonly known as fatty liver (fatty liver), is usually a nutritional disease. Due to the highly intensive rainbow trout culture and the widespread use of compounded feeds, the disease is extremely common and causes serious losses to farmed and raised produce throughout the country. The second-instar fish kept in our rainbow trout field continued to die in large numbers from the end of July to mid-September. The peak daily mortality rate was 0.6% and the cumulative death rate was 21.9%. This paper made a preliminary study on the pathological changes and mechanisms of liver steatosis in rainbow trout.