Effect on Rice Field Eel's Performance of the Level of Diet Substitute Fish Meal with Soybean Meal,Meat Bone Powder

Feeding rice field eel(Monopterus albus)for 8 weeks by rice field eel'formula diet that substituted equal nitrogen fish meal' separately with soybean meal,meat bone meat by 0.0%,7.5%,15.0%,22.5%,30.0%,37.5%.The results showed that along with the increase of replacing amount of soybean meal and meat bone powder,the productivity of the rice field eel reduced gradually.But the replacing amount of soybean meal within 15%,meat bone powder within 22.5%,the rice field eel's productivity had no significance discrepancy.The content of the fish meal should not be lower than 30% in rice field eel's diet.