Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan.
Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan.
Poult Sci. 2020 Mar;99(3):1432-1443. doi: 10.1016/j.psj.2019.10.061. Epub 2019 Dec 9.
This study investigated the effects of Bacillus licheniformis-fermented products on the growth performance and fecal microbial community of broilers. A total of 144 one-day-old male broiler chicks (Ross 308) were randomly assigned into 4 dietary treatments, with 6 replicate cages per treatment and 6 birds per cage. The dietary treatments comprised a basal diet as control, control plus 1 and 3 g/kg of B. licheniformis-fermented products, and control plus 10 mg/kg of enramycin. The results indicated that 3 g/kg of B. licheniformis-fermented products increased (P < 0.05) the BW and ADG of broilers relative to controls. No significant difference was observed in the growth performance of broilers fed enramycin and 3 g/kg of B. licheniformis-fermented products. However, principal coordinate analysis and a heatmap of species abundance indicated distinct clusters between the groups treated with enramycin and 3 g/kg of B. licheniformis-fermented products. The abundance of the phylum Firmicutes in feces increased (P < 0.05) in broilers fed 3 g/kg of B. licheniformis-fermented products, whereas the abundance of the phyla Verrucomicrobia and Bacteroidetes in feces decreased (P < 0.05) in response to treatment with 3 g/kg of B. licheniformis-fermented products. The abundance of the genera Enterococcus, Akkermansia, Ruminococcus torques group, Faecalibacterium, and Parabacteroides in feces decreased (P < 0.05) in broilers fed 3 g/kg of B. licheniformis-fermented products, whereas the abundance of the genus Lactobacillus in feces increased (P < 0.05) in response to treatment with 3 g/kg of B. licheniformis-fermented products. The average abundance of the genus Lactobacillus in feces was positively correlated with the growth performance of broilers. These results demonstrate that B. licheniformis-fermented products can improve the growth performance and fecal microflora composition of broilers.
本研究旨在探讨地衣芽孢杆菌发酵产物对肉鸡生长性能和粪便微生物群落的影响。选用 144 只 1 日龄雄性罗斯 308 肉鸡，随机分为 4 个处理组，每个处理组设 6 个重复，每个重复 6 只鸡。对照组饲喂基础日粮，试验组在基础日粮中分别添加 1、3 g/kg 地衣芽孢杆菌发酵产物和 10 mg/kg 恩拉霉素。结果表明：与对照组相比，3 g/kg 地衣芽孢杆菌发酵产物显著提高了肉鸡的 BW 和 ADG（P<0.05）。添加恩拉霉素和 3 g/kg 地衣芽孢杆菌发酵产物对肉鸡生长性能无显著影响。然而，主坐标分析和物种丰度热图表明，恩拉霉素和 3 g/kg 地衣芽孢杆菌发酵产物处理组之间存在明显的聚类。粪便中厚壁菌门的丰度在添加 3 g/kg 地衣芽孢杆菌发酵产物的肉鸡中显著增加（P<0.05），而拟杆菌门和变形菌门的丰度在添加 3 g/kg 地衣芽孢杆菌发酵产物的肉鸡中显著降低（P<0.05）。粪便中肠球菌属、阿克曼氏菌属、罗氏菌属、粪球菌属和副拟杆菌属的丰度在添加 3 g/kg 地衣芽孢杆菌发酵产物的肉鸡中显著降低（P<0.05），而粪便中乳杆菌属的丰度在添加 3 g/kg 地衣芽孢杆菌发酵产物的肉鸡中显著增加（P<0.05）。粪便中乳杆菌属的平均丰度与肉鸡的生长性能呈正相关。这些结果表明，地衣芽孢杆菌发酵产物可以改善肉鸡的生长性能和粪便微生物群落组成。
