Effect of different levels of probiotic preparations on the growth performance of hybrid sturgeon
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
万方数据
维普
