Effects of the Forage Type and Chop Length of Ramie Silage on the Composition of Ruminal Microbiota in Black Goats

文献类型： 外文期刊

第一作者： Sun, Shengnan

作者： Sun, Shengnan;Hou, Zhenping;Dai, Qiuzhong;Wu, Duanqin;Sun, Shengnan

作者机构：

关键词： bacterial community composition; black goats; chop length; ramie silage

期刊名称：ANIMALS （ 影响因子：2.752； 五年影响因子：2.942 ）

ISSN： 2076-2615

年卷期： 2019 年 9 卷 4 期

页码：

收录情况： SCI

摘要： Simple Summary The aim of this study was to evaluate the effects of the forage type and chop length of ramie (Boehmeria nivea (L.) Gaud.) silage on ruminal microbiota in black goats. The ruminal pH and relative abundance of microorganisms in the rumen differed with the lengths of the ramie silage fed to the goats. These results could provide a basis for ramie silage application in goats. Abstract The aim of this study was to investigate the effects of the forage type and chop length of ramie (Boehmeria nivea (L.) Gaud.) silage on rumen fermentation and ruminal microbiota in black goats. Sixteen Liuyang black goats (22.35 +/- 2.16 kg) were fed with the roughage of corn silage or ramie silage at chop lengths of 1, 2, or 3 cm. The Chao 1 index and the observed number of microbial species differed significantly between the corn and ramie silage groups (p < 0.05); however, Firmicutes (relative proportion: 34.99-56.68%), Bacteroidetes (27.41-47.73%), and Proteobacteria (1.44-3.92%) were the predominant phyla in both groups. The relative abundance of Verrucomicrobia (0.32-0.82%) was lowest for the 2 and 3 cm chop lengths (p < 0.05) and was negatively correlated with rumen pH and propionic acid concentration (p < 0.05), but positively correlated with the ratio of acetic acid to propionic acid (p < 0.05). The ramie silage fermentation quality was highest for the 1 cm chop length, suggesting that moderate chopping produces optimal quality silage.

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