为了使鱼饲料增加磷脂,利用工业鱼油(这种鱼油是干制法生产鱼粉的副产品)作为高级不饱和脂肪酸的主要来源比植物油更加适合。但是鱼油用于该项目却受到了许多因素的限制。按照标准,鱼饲料中脂肪的氧化物和过氧化物的含量不应超过70mg KOH/g 和0.30%的 I_2(根据1976年贮存虹鳟鱼饲料的推荐值)。而在工业鱼油中,这些指标往往超过了允许标准。除此之外,鱼油的容易氧化,有时含有过氧化物和氢过氧化物分 In order to increase phospholipids in fish feeds, the use of industrial fish oil, a by-product of dry-process fishmeal production, is better suited as a major source of higher unsaturated fatty acids than vegetable oils. But fish oil is used for this project is limited by many factors. By standard, the fat oxides and peroxides in the fish feed should not exceed 70 mg KOH / g and 0.30% I 2 (based on the 1976 recommended stock of rainbow trout feed). In industrial fish oil, these indicators often exceed allowed standards. In addition, fish oil easily oxidized, sometimes containing peroxide and hydroperoxides