Effect of different contents of soybean meal in diets on the growth perform-ance of Pseudobagrus ussuriensis
In order to study the effect of different contents of soybean meal replacing fish meal on the growth per-formance of Pseudobagrus ussuriensis,five soybean meal replacing fish meal groups were selected from the same batch of artificially hatched fish fry,which were 0%,15%,30%,45%and 60%,respectively,according to the principle of isonitrogen and isoenergy.Each experiment group was divided into 3 replicates,and Pseudobagrus us-suriensisin each replicate group was raised in an aquarium size of 0.8 m×0.8 m×0.6 m.The whole feeding experi-ment was maintained for 64 days.The results showed that there was no significant difference in the end-stage weight,weight gain rate,survival rate and specific growth rate of Pseudobagrus ussuriensis between the 15%-30%replacement group and the control group(0%)(P＞0.05).When the replacement amount of soybean meal is 45%and 60%,the end-stage weight,weight gain rate and survival rate of Pseudobagrus ussuriensis are significantly low-er than those of the control group(P＜0.05).The specific growth rate of 45%was significantly lower than that of control group(P＜0.05),and the specific growth rate of 60%was significantly lower than that of control group(P＜0.01).The results show that the replacement of fishmeal by soybean meal in 50%iso-nitrogen iso-energy feed is less than 30%,which has no effect on Pseudobagrus ussuriensis growth.
万方数据
维普
