Effects of different proportions of two Bacillus sp on the growth performance, small intestinal morphology, caecal microbiota and plasma biochemical profile of Chinese Huainan Partridge Shank chickens

文献类型： 外文期刊

第一作者： Yang Jia-jun

作者： Yang Jia-jun;Qian Kun;Wu Dong;Zhang Wei;Wu Yi-jing;Xu Ya-yuan

作者机构：

关键词： two-strain Bacillus;proportion;growth performance;small intestinal morphology;biochemical profile

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2017 年 16 卷 6 期

页码：

收录情况： SCI

摘要： A total of 900 one-d-old Chinese Huainan Partridge Shank chickens were randomly allocated into nine groups with five replicates of 20 each. Birds were fed with basal diet, basal diet supplemented with 150 mg kg(-1) aureomycin, basal diet supplemented with different proportions of Bacillus licheniformis and Bacillus subtilis, which was 0:1.0x10(6), 2.5x 10(5):7.5x10(5), 3.3x10(5):6.6x10(5), 5.0x10(5):5.0x10(5), 6.6x10(5):3.3x10(5), 7.5X10(5):2.5x10(5) and 1.0x10(6):0, respectively. The duration of the experiment was 56 d. The results indicated that dietary supplementation of 6.6x10(5):3.3x10(5) of B. lichenifomis:B. subtilis improved final body weight, increased the average daily gain, and reduced feed/gain ratio (P<0.05). The numbers of total Lactobacillus and Bifidobacterium sp. in the caecum significantly increased, and the numbers of Escherichia coli and Salmonella sp. significantly declined compared to that of the control (P<0.05). Intestinal villous height and villous height to crypt depth ratio of the duodenum, jejunum, and ileum were significantly higher than that of the control, and intestinal crypt depth of the duodenum and ileum was significantly lower (P<0.05). The total antioxidant capacity, total superoxide dismutase, and glutathione peroxidase ability in plasma significantly improved, while the malondialdehyde concentration in plasma decreased (P<0.05). Compared to the control, plasma concentrations of ammonia, uric acid and urea nitrogen and the activity of xanthine oxidase were reduced (P<0.05). In conclusion, an inclusion of 6.6x10(5):3.3x10(5) of B. licheniformis: B. subtilis to the diet improved the growth performance, caecal microbiota, plasma biochemical profile, and significantly improved the small intestine morphology, while reducing the mortality rate.

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