数字农科院2.0

The effect of different doses of Astragalus root extract on in vitro rumen fermentation of steam-flaked maize grains used as an only substrate

文献类型： 外文期刊

作者： Deng, D. J.;Ren, L. P.;Zhou, Z. M.;Meng, Q. X.;Deng, D. J.;Ren, L. P.;Zhou, Z. M.;Meng, Q. X.;Wang, J.

作者机构：

关键词： plant extract;rumen fermentation;in vitro gas production

期刊名称： JOURNAL OF ANIMAL AND FEED SCIENCES

ISSN： 1230-1388

年卷期： 2007 年 16 卷

页码：

收录情况： SCI

摘要： An in vitro study was conducted to determine the effect of different doses of Astragalus root extract (ARE, Huangqi) on rumen fermentation of steam-flaked maize grains. Rumen fluid was taken from 3 crossbred steers fed a 55% forage to 45% mixed concentrate ratio diet. As ARE dose was increased, ruminal ammonia-N concentration was decreased in a dose dependent manner, whereas total volatile fatty acid concentration and total gas production were increased linearly (P<0.001). Increasing ARE doses resulted in decreased molar proportion of acetate and increased molar proportion of propionate as well as a decrease in acetate: propionate ratio. In conclusion, ARE could stimulate the mixed ruminal fermentation as well as modify the pattern of rumen fermentation in vitro.

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