For a long time, phytogenic resources have been widely used as substitutes for antibiotics in livestock production. However, few studies have examined the relationship between the intestinal microbiota and fermented herbal medicines. Here, 252 Arbor Acres broiler plus broiler chickens were randomly assigned to a control group, which was fed a basal diet; an unfermented healthy chicken powder group (JJS) fed a basal diet containing 20 g/kg JJS; or one of 5 fermented JJS groups, which were fed a basal diet containing 20 g/kg JJS, fermented with by 5 different bacterial strains for 42 days. The growth performances of the different groups were measured and the changes in the intestinal microbiota were analyzed. The body weight gain in the Bacillus subtilis group (Bs) was the highest among the 6 groups, while the feed conversion ratio (FCR) was best with Z. rouxii fermentation. The result indicated that products of JJS fermentation products of JJS by B. subtilis and Z. rouxii had important effects on chicken growth performance. The foregut and hindgut microbial communities of Bs, Zr, the control group and the JJS group, were collected for 16S rDNA sequencing. The results showed that JJS and its fermentation products mainly acted on the foregut and had little effect on the hindgut, and Z. rouxii fermentation products can increased the diversity in the foregut microbial community. In addition, the relative abundance of Bifidobacterium in the foregut of the Z. rouxii group was significantly increased, which may be an important factor in promoting growth.

长期以来，植物资源已广泛用作牲畜生产中抗生素的替代品。但是，很少有研究检查肠道菌群与发酵草药之间的关系。在这里，将252棵Arbor Acres肉鸡和肉鸡随机分配到对照组，以基础饮食喂养。未发酵的健康鸡粉组（JJS），其基础饮食含20 g / kg JJS；或5个发酵的JJS组中的一组，分别喂以含20 g / kg JJS的基础饮食，并用5种不同的细菌菌株发酵42天。测量不同组的生长性能，并分析肠道菌群的变化。枯草芽孢杆菌的体重增加6个组中Bs组最高，而鲁氏酵母发酵的饲料转化率（FCR）最好。结果表明，枯草芽孢杆菌和鲁氏沼虾的JJS发酵产物对鸡的生长性能有重要影响。收集Bs，Zr，对照组和JJS组的前肠和后肠微生物群落进行16S rDNA测序。结果表明，JJS及其发酵产物主要作用于前肠，对后肠影响不大，而鲁氏梭菌发酵产物可以增加前肠微生物群落的多样性。此外，双歧杆菌在鲁氏沼虾前肠中的相对丰度 组明显增加，这可能是促进生长的重要因素。