根据鱼类各生长期的生长特点可划分为长个体期和长肥期,采用相应的投喂方法,经济效益高。长个体期是鱼需要大量的蛋白质和各种营养元素来进行撑骨架的时期,对这段时期的饲料要求多配制些蛋白质较丰富的,如饼类和鱼粉。配制时饼类不得少于饲料总量的50%～60%,鱼粉不少于5%～10%, According to the growth characteristics of fish in each growth period can be divided into long individual and long fat period, using the appropriate feeding method, high economic efficiency. Long period of fish is the need for a large number of proteins and various nutrients to support skeleton period, for this period of feed requirements more prepared more protein-rich, such as cakes and fishmeal. When preparing the cake shall not be less than 50% of the total feed 60%, not less than 5% to 10% fish meal,