Effects of black fly larvae powder on growth,immunity,and antioxidant performance of Macrobrachium rosenbergii juveniles
The experiment aimed to explore the impact of replacing fish meal with black fly larvae powder at different ratios in the feed on the growth and immune function of Macrobrachium rosenbergii.Nine hundred healthy juvenile Macrobrachium rosenbergii with an average weight of(1.22±0.02)g were randomly divided into six groups,with three replicates per group and 50 shrimp per replicate.The control group(FM group)received a basal diet,while the T10 group,T20 group,T30 group,T40 group,and T50 group had 10％,20％,30％,40％,and 50％of fish meal replaced by black fly larvae powder,respectively.The experimental period lasted for 56 days.The results showed that the feed conversion ratio of the FM group and T10 group was significantly lower than that of the other groups(P＜0.05),and the protein efficiency of the FM group was significantly higher than that of the other groups(P＜0.05).The blood lymphatic malondialdehyde(MDA)content of the FM group,T10 group and T20 group was significantly lower than that of the T40 group and T50 group(P＜0.05).The blood lymphatic lysozyme(LZM)activity of the T10 group was significantly higher than that of the T30 group,T40 group,and T50 group(P＜0.05).The liver and pancreas alkaline phosphatase(AKP)and acid phosphatase(ACP)activities of the T30 group and T40 group were lower than those of the other experimental groups.The study suggests that feeding Macrobrachium rosenbergii with a diet where 10％to 20％of fish meal is replaced by black fly larvae powder is feasible.
black fly larvae powderMacrobrachium rosenbergiigrowthimmunity
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