在温室条件下,配制六种含量不同的蛋白质、脂肪水平的配合饲料喂养美国大口胭脂鱼春片鱼种,测定鱼体的增重。结果为:第1～6组的日增重分别为:20.9、19.6、18.5、18.0、16.9和16.7g,日增重率分别为1.88％、1.87％、1.78％、1.76％、1.65％、1.79％;相对增重率分别为78.8％、77.85％、72.64％、71.52％、65.84％、73.72％。结果表明,脂肪是影响美国大口胭脂鱼春片鱼种生长的主要营养因素。 Under greenhouse conditions, six kinds of different levels of protein and fat were formulated to feed the fish of the American big-mouth rouge fish, and the weight gain of the fish was measured. The results showed that the daily gain of groups 1 to 6 were 20.9, 19.6, 18.5, 18.0, 16.9 and 16.7g respectively, and the daily gain was 1.88%, 1.87%, 1.78%, 1.76%, 1.65%, 1.79 %; The relative weight gain rates were 78.8%, 77.85%, 72.64%, 71.52%, 65.84%, 73.72% respectively. The results show that fat is the main nutritional factor that affects the growth of spring snapper species in the United States.