This experiment was conducted to investigate the effects of different levels of probiotics on the growth per-formance of hybrid sturgeon(Acipenser baerii♂×Acipenser schrenckii♀),and to determine the optimal supplemen-tal level of probiotics in hybrid sturgeon culture.400 healthy hybrid sturgeon with a body weight of about 75g were randomly divided into 4 groups with 4 replicates per group and 25 sturgeons per replicate.The hybrid acipenser in the control group was fed basic diet,and the hybrid acipenser in the probiotics group was fed probiotics containing 0.2%,0.4%and 0.8%,respectively.The feeding period was 56 days.After the experiment,the growth perform-ance of hybrid acipenser in each group was tested.The results showed that the final weight and weight gain rate of hybrid sturgeon in test group 2 were significantly higher than those in control group(P＜0.05),and feed conver-sion ratio was significantly lower than that of control group(P＜0.05).The survival rate of hybrid sturgeon was in-creased by probiotics,all of which were 100%.Probiotics had no significant effects on hepatosomatic ratio and vis-cerosomatic ratio of hybrid sturgeon(P＞0.05).The results showed that the growth performance of hybrid sturgeon could be effectively improved by adding 0.4%probiotics to hybrid sturgeon aquaculture feed.
probioticshybrid sturgeonweight gain ratefeed coefficientgrowth performance
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