In order to investigate the effects of two kinds of compound immunopotentiators based on andrographolide on the growth,immunity and physiological and biochemical indexes of eel[initial weight:(25.00±0.05)g],there were F0(basal feed),F1(basal feed+0.05%andrographis+0.05%tributyrin+0.02%bile acid+0.04%mannooligosaccharide)and F2(basal feed+0.05%andrographolide+0.05%tributyrin+0.02%taurine+0.05%Astragalus polysaccharide)in this experiment,three treatment groups,each with 3 replicates,and the culture experiment lasted 56 days.The results showed th...