Supplementation of increasing amounts of linoleic acid to Leymus chinensis decreases methane production and improves fatty acid composition in vitro

文献类型： 外文期刊

第一作者： Wu, Duanqin

作者： Wu, Duanqin;Tang, Shaoxun;He, Zhixiong;Tan, Zhiliang;Han, Xuefeng;Zhou, Chuanshe;Kang, Jinhe;Wang, Min;Wu, Duanqin;Tang, Shaoxun;He, Zhixiong;Tan, Zhiliang;Han, Xuefeng;Zhou, Chuanshe;Kang, Jinhe;Wang, Min;Wu, Duanqin;Tang, Shaoxun;He, Zhixiong;Tan, Zhiliang;Han, Xuefeng;Zhou, Chuanshe;Kang, Jinhe;Wang, Min;Wu, Duanqin

作者机构：

关键词： Fatty acids;Gas production;In vitro;Linoleic acid;Methane

期刊名称：EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY （ 影响因子：2.679； 五年影响因子：2.627 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The effects of linoleic acid (LA) supplementation on in vitro dry matter disappearance(DMD), gas production, methane and hydrogen gas production, ruminal fermentation characteristics, and fatty acid (FA) profiles in fermentation fluid were investigated in vitro. Rumen fluid was collected from four ruminally cannulated goats, diluted with incubation buffer, and then incubated with 500 mg Leymus chinensis meal supplemented with different amounts of LA(0,20, 40, and 60 mg for the control, LA20, LA40, and LA60 groups, respectively). In vitro rumen incubation was anaerobically carried out in 130-mL sealed fermentation bottles at 39 degrees C for 48 h, and samples were collected at three time points (12, 24, and 48 h) for analysis. Supplementation of LA reduced DMD(P<0.05), the cumulative gas production, theoretical maximal gas production and methane production (P<0.05), whilst increased the hydrogen gas production. In addition, LA addition to substrate had no negative effects on ruminal fermentation parameters (pH, NH3, and VFA). The concentration of total polyunsaturated fatty acid (PUFA) and conjugated linoleic acid (CLA) were higher for LA groups than for control during the whole incubation process. These results indicate that LA supplementation in substrate reduces gas and methane production, and increases the amounts of some beneficial fatty acids in fermentation liquid in vitro.

分类号： TQ645`TS22

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