文献类型： 外文期刊
作者： Ma, Tao;Chen, Dan-Dan;Tu, Yan;Zhang, Nai-Feng;Si, Bing-Wen;Diao, Qi-Yu
作者机构：
关键词： CH4;flavonoids;polyphenol;sheep
期刊名称： ANIMAL SCIENCE JOURNAL
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： The effects of flavonoids on methanogenesis and microbial flora in Dorperxthin-tailed Han crossbred ewes were evaluated in two experiments. To investigate the effects of flavonoids on nutrient digestibility and nitrogen balance, 18 ewes (60.0 +/- 1.73kg body weight (BW)) were allotted to two dietary treatments in experiment one, a control diet and the control diet supplemented with flavonoids (2g/head/day). In experiment two, the effects of supplementary flavonoids on ruminal fermentation and microbial flora were investigated using quantitative polymerase chain reaction with six ewes (67.2 +/- 0.79kg BW) with ruminal cannula assigned to the identical dietary treatments used in experiment one. Supplementary flavonoids improved the apparent digestibility of nitrogen (N, P<0.001) and neutral detergent fibre (NDF, P=0.024) and decreased daily CH4 output (P<0.001). The ruminal pH (P=0.638) and ammonia (P=0.690) were not affected by supplementary flavonoids, whereas the total volatile fatty acid (VFA) content increased (P=0.037). Supplementary flavonoids decreased ruminal populations of protozoans (P=0.002) and methanogens (P<0.001) and increased the populations of Fibrobacter succinogenes (P=0.016). In conclusion, flavonoids improved the digestibility of organic matter and reduced CH4 output by inhibiting the populations of microbes involved in methanogenesis.
分类号： S8
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