玉屏风多糖复合微生态制剂对草鱼生长和肠道菌群的影响

Effect of Yupingfeng polysaccharide compound microecological preparation on growth and intestinal microflora of grass carp

试验旨在探究玉屏风多糖复合微生态制剂对草鱼生长和肠道菌群的影响。选取360尾健康草鱼,随机分成3组,即基础饵料组(对照组/A组)、复合微生态制剂组(B组)、玉屏风多糖复合微生态制剂组(C组),每组3个重复,每个重复40尾鱼。试验周期为21 d。结果显示,C组草鱼末重、增重率均显著高于对照组(P<0.05)。C组草鱼肠道肌层厚度及脂肪酶活性显著高于对照组(P<0.05)。草鱼肠道菌群丰富度在试验14~21 d时明显提高,优势菌门分别为变形菌门、厚壁菌门,优势菌属为宝石杆菌属、厌氧菌属。研究表明,饵料中添加玉屏风复合微生态制剂可提高草鱼生长性能,增强肠道消化酶活性,改善肠道菌群。

The experiment was to explore effect of Yupingfeng polysaccharide complex microecological preparation on growth and intestinal flora of grass carp.A total of 360 healthy grass carp were randomly divided into three groups,divided into basic feed group(control group/group A),compound microecological preparation(group B)and Yupingfeng polysaccharide compound microecological preparation(group C)with three replicates in each group and 40 grass carp in each replicate.The test period was 21 d.The results showed that the final weight and weight gain rate of grass carp in group C were significantly higher than those in control group(P<0.05).The intestinal muscle thickness and lipase activity of grass carp in group C were significantly higher than those in control group(P<0.05).The intestinal flora richness was significantly increased on 14~21 d.The dominant gut microbiota of grass carp were Protea and Firmicum,dominant genera of bacteria were Gemnobacillus and Anaerobic bacteria.The study indicates that addition of Yupingfeng compound microecological preparation in bait can improve growth performance,intestinal digestive enzyme activity and intestinal microorganisms of grass carp.