为充分利用大豆植物蛋白,葡萄牙生物科学研究所营养研究室用豆粉代替鱼粉养殖虹鳟鱼.试验虹鳟鱼种体重平均25克,试验饵料分别含豆粉28.4%、42.4%和56.8%,对照饵料含鱼粉39%.另外两种试验饵料脂肪添加量20%和26%.全部试验饵料含蛋白质33%～41%,唯有脂肪添加量为26%的饲料含蛋白质18.5%.试验60天结果表明:投喂六种试验饵料的鱼日平均增重依次为1.4 In order to make full use of the soybean plant protein, rainbow trout was cultured with soybean meal instead of fishmeal in the Nutrition Laboratory of the Institute of Biological Sciences, Portugal. The average body weight of the rainbow trout species was 25g. The test bait contained 28.4%, 42.4% and 56.8% Including fishmeal 39% .In addition, two kinds of experimental diets added 20% and 26% of fat.All the experimental diets contained 33% ~ 41% of the protein, only 18.5% of the 26% The average daily gain of fish fed the six experimental diets was 1.4