本文报道了史氏鲟饲料脂肪最适含量的结果。试验饲料是以酪蛋白、鱼粉、糊精和纤维素等为主要原料配制而成的等氮 (蛋白质含量 4 1% )和等能量的 ( 11 2MJ/kg饲料 )的半精制饲料 ,以等量混合的海水鱼油、豆油作为添加的脂肪源 ,设 0、2 %、4 %、6%、8%和 10 %共 6种添加浓度。试验周期为 2 5d。结果显示 :增重率、饲料系数和蛋白质效率均以脂肪含量 7 6% - 9 6%的 4、5组饲料最佳 ,与脂肪含量分别为 1 6%和 3 6%的 1、2组饲料差异显著 ,但与脂肪含量分别为 5 6%和 11 6%的 3、6组饲料差异不显著。如果考虑到饲料成本 ,把史氏鲟饲料脂肪的最适合量设定在 8%左右是合适的 This paper reports the result of the optimum fat content of Amur sturgeon. The test feed was prepared from casein, fish meal, dextrin, cellulose and other equal nitrogen (protein content 4 1%) and equal energy (11 2MJ / kg feed) semi-refined feed in an equal amount Mixed seawater fish oil, soybean oil as added fat source, set 0, 2%, 4%, 6%, 8% and 10% total 6 kinds of added concentration. The test period is 25d. The results showed that the weight gain rate, feed conversion coefficient and protein efficiency were the best in group 4 and group 4 with the fat content of 7.6% -9.6%, and those of group 1 and group 2 with fat content of 16% and 36% The difference was not significant, but there was no significant difference between 3 and 6 feedstuffs with the fat content of 56% and 116% respectively. Given the feed costs, it is appropriate to set the optimum amount of Amur sturgeon feed fat at about 8%