The effects of Dihydromyricetin ( DMY) on growth performance,serum indexes anddigestive enzymes of Cypri-nus carpiowere investigated in the present work.The group fed the basal diet was used as the control, and the basal diets supplemented with different DMYs (0.075%,0.10%,0.125% and 0.25%) were used as the treatments.The treatments added with 0.125% and 0.25% DMY significantly increased WGR and CF of Cyprinus carpio( P<0.01) ,and different dos-ages of DMY might extremely significantly decrease the CFR(P<0.01). Addition of 0.25% DMY significantly increased ALB and TP levels in the serum of Cyprinus carpio( P<0.05) ,and different dosages of DMYs gave no significant effect on the GOT activity in the serum ( P>0.05) . Treatment with 0.25% DMY could significantly improvethe pepsaseactivity ( P<0.05),intestinalamylase activitydecreased significantly(P<0.01),and the addition of different dosages of DMYs had no significantly effects on the intestinal lipase activity of Cyprinus carpio( P>0.05) .%试验旨在研究二氢杨梅素(Dihydromyricetin,DMY)对鲤鱼生长性能、血清指标及消化酶指标的影响.选取体重相近的鲤鱼,随机分为5个处理组,Ⅰ组为饲喂基础日粮的对照组,Ⅱ、Ⅲ、Ⅳ、Ⅴ组为分别添加DMY 0.075%、0.10%、0.125%、0.25%的试验组.试验期为64 d,结果表明,基础日粮中添加0.125%和0.25%的DMY极显著提高鲤鱼的增重率(WGR)和肥满率(CF),不同剂量的DMY添加都极显著降低鲤鱼饵料系数(FCR)(P<0.01).基础日粮中添加0.25%DMY显著提高鲤鱼血清中白蛋白(ALB)和总蛋白(TP)的含量(P<0.05),添加不同剂量的DMY对鲤鱼血清中谷草转氨酶(GOT)活性没有显著影响(P>0.05).基础日粮中添加0.25%DMY可以显著提高鲤鱼胃蛋白酶活性(P<0.05),极显著降低肠道淀粉酶活性(P<0.01),添加不同剂量DMY对鲤鱼肠道脂肪酶活性没有显著影响(P>0.05).
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