Tian Dandan, Xu Xiaoqing, Peng Qing, Wen Zhiguo, Zhang Yuwei, Wei Chenyang, Qiao Yu, Shi Bo
Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 South Zhongguancun Street, Beijing, 100081 People's Republic of China.
3 Biotech. 2019 Feb;9(2):54. doi: 10.1007/s13205-019-1571-5. Epub 2019 Jan 25.
Arabinoxylan (AX) is abundant in cereal grains used as feed for ducks. However, the duck intestinal microbes responsible for the degradation of AX are not fully understood. In this study, oat AX was degraded and utilized by different duck intestinal microbiota in vitro. Changes in short-chain fatty acids (SCFAs), branch-chain fatty acids, and the pH resulted from a 72-h AX fermentation in intestinal samples were measured. The addition of AX increased the concentration of isobutyric acid and decreased the concentrations of SCFAs. The pH values decreased significantly in the intestinal samples. Gut microbiota were assessed using high-throughput sequencing of the 16S ribosomal RNA gene, and the results indicated that AX stimulated the growth of and species, with exhibiting the greatest stimulation. Overall, the results suggest that oat AX is utilized by specific bacteria in duck intestines, providing the theoretical basis for the impacts of AX on animal health.
阿拉伯木聚糖（AX）在用作鸭饲料的谷物中含量丰富。然而，负责降解AX的鸭肠道微生物尚未完全明确。在本研究中，燕麦AX在体外被不同的鸭肠道微生物群降解和利用。测定了肠道样本中72小时AX发酵导致的短链脂肪酸（SCFA）、支链脂肪酸和pH值的变化。添加AX增加了异丁酸的浓度，降低了SCFA的浓度。肠道样本中的pH值显著下降。使用16S核糖体RNA基因的高通量测序评估肠道微生物群，结果表明AX刺激了 和 物种的生长，其中 受到的刺激最大。总体而言，结果表明燕麦AX被鸭肠道中的特定细菌利用，为AX对动物健康的影响提供了理论依据。
