本文采用挤压膨化饲料作为试验组,硬颗粒饲料、小杂鱼作为对照组,对虹鳟鱼养殖效果和饲养成本进行分析。试验结果表明:试验组各项性能指标均优于对照组,且单位增重的饲料成本下降,说明用挤压膨化饲料代替硬颗粒饲料和小杂鱼养殖虹鳟鱼,可获得较好的经济效益。 In this paper, extruded puffed feed as the test group, hard pellet feed, small trash fish as a control group, rainbow trout breeding effect and feeding costs were analyzed. The results showed that all the performance indexes of the experimental group were better than the control group, and the unit weight of the feed costs decreased, indicating that extruded extruded feed instead of hard pellets and small trash fish farming rainbow trout, can obtain better economic benefits .