Steffens W, Albrecht M L
Arch Tierernahr. 1975 Dec;25(9-10):717-23. doi: 10.1080/17450397509423238.
Commercially prepared mixtures of dry feed for trout were supplemented with sunflower oil, cod liver oil or emulsions of fish oil in amount of about 5% and were fed to hatchery rainbow trout (Salmo gairdneri) for an experimental period of 112 days at water temperatures ranging from 13 degrees to 20 degrees C. The fish receiving the fatted pellets were clearly superior to the controls in regard of rate of gain, food utilization and protein utilization. The best results were obtained with additions of sunflower oil. In this case, the rate of gain was 382% as compared with 262% (for the controls), food consumption per weight gain of fish was 1.28 compared with 1.98, PER 2.04 compared with 1.26 and PPW (productive protein value) 34.5 relative to 22.4. Additions of fat to the feed increased the fat content of the experimental fish by about 3%, raising it to an average total of 11.5%. The same effect had already been observed in a previous trial as a result of a 10% addition of sunflower oil.
将商业化制备的鳟鱼干饲料混合物补充约5%的向日葵油、鱼肝油或鱼油乳剂，并在水温为13摄氏度至20摄氏度的条件下，将其投喂给孵化场的虹鳟（Salmo gairdneri），实验期为112天。在增重率、食物利用率和蛋白质利用率方面，接受添加脂肪颗粒饲料的鱼明显优于对照组。添加向日葵油取得了最佳效果。在这种情况下，增重率为382%，而对照组为262%；每增重单位鱼的食物消耗量为1.28，而对照组为1.98；蛋白质效率比值（PER）为2.04，而对照组为1.26；生产性蛋白质值（PPW）为34.5，而对照组为22.4。向饲料中添加脂肪使实验鱼的脂肪含量增加了约3%，平均总脂肪含量提高到11.5%。在之前的一次试验中，由于添加了10%的向日葵油，也观察到了同样的效果。
