The purpose of this study was to investigate the effects of tributylglycerol on the growth,immunity and digestibility of herring.360 juvenile herring with an initial body mass of(12.47±0.69)g were randomly divided into 4 groups with 3 replicates in each group(n=30).The four groups of juvenile herring were fed with equal nitrogen and equal fat diets supplemented with 0、500、1000 and 2000 mg/kg tributylglycerol respectively for 8 weeks.The results showed that the final body weight of herring was significantly increased and the feed coefficient was significantly decreased by adding glycerol tributylate 1000 and 2000 mg/kg(P＜0.05),the liver/body ratio of herring was significantly increased when the addition of 2000 mg/kg.In terms of immune performance,the addition of 500mg/kg tributylglycerol significantly increased the content of superoxide dismutase of herring(P＜0.05),the addition of 1000 and 2000 mg/kg tributylglycerol significantly increased the content of lysozyme and C3 of herring(P＜0.05),but the addition of glycerol tributylate had no significant effect on alkaline phosphatase and C4 of herring tissue(P＞0.05).In terms of digestibility,the addition of 500 mg/kg tributylglycerol significantly increased the content of superoxide dismutase of herring(P＜0.05),the addition of 1000 and 2000 mg/kg tributylglycerol significantly increased the content of lysozyme and C3 of herring(P＜0.05),the addition of glycerol tributylate had no significant effect on alkaline phosphatase and C4 of herring tissue(P＞0.05).In a word,the addition of tributylglycerol in feed has a certain positive effect on the growth,immunity and digestibility of herring.Under the experimental conditions,the optimum addition of tributylglycerol is 1000 mg/kg.
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