以豆粕和鱼粉为基础蛋白源,以双低菜籽粕等氮替代一定量的豆粕和鱼粉,用于草鱼、鲤和日本沼虾的饲养。结果表明,饲料中菜籽粕等氮替代豆粕蛋白质等于或低于75%时,草鱼的增重率、特定生长率和摄食率与对照组相比均无显著差异;等氮替代率等于或低于50%时,饵料系数无显著差异;100%等氮替代豆粕和鱼粉蛋白质时各项生长性能均最差。饲料中菜籽粕等氮替代豆粕蛋白质等于或低于50%时,鲤的特定生长率和摄食率与对照组相比均无显著差异,25%等氮替代率时饵料系数最低。等氮替代7%豆粕蛋白质(饲料中菜籽粕含量为4.1%)时,日本沼虾的生长情况与对照组基本一致,等氮替代14%(菜籽粕含量为8.2%)时,日本沼虾的增重率显著低于对照组和XⅡ组,随着菜籽粕含量的增加,饲料系数增大,成活率下降。 With soybean meal and fish meal as the basic protein source, double-low rapeseed meal and other nitrogen substitutes a certain amount of soybean meal and fish meal for grass carp, common carp and Japanese marsh shrimp breeding. The results showed that there was no significant difference in weight gain rate, specific growth rate and feeding rate of grass carp compared with the control group when the nitrogen content of rapeseed meal and other substituting soybean meal in feed was equal to or lower than 75% At 50%, there was no significant difference in feedstuff coefficient; 100% isobaric nitrogen was the worst growth performance when replacing soybean meal and fishmeal protein. The specific growth rate and feeding rate of common carp did not differ significantly from those of the control group when the protein such as rapeseed meal replaced the soybean meal at or below 50%, while the feed conversion rate at 25% was the lowest. Nitrogen replaces 7% soybean meal protein (feed rapeseed meal content of 4.1%), the growth of Macrobrachium nipponense is basically the same as the control group, when the nitrogen replaces 14% (rapeseed meal content of 8.2%), Nipponbashi The weight gain rate of shrimp was significantly lower than that of the control and XII groups. With the increase of rapeseed meal content, the feed efficiency increased and the survival rate decreased.