Influence of Cuticular Waxes from Triticale on Rumen Fermentation: A Metabolomic and Microbiome Profiling Study

文献类型： 外文期刊

第一作者： Huang, Jiahao

作者： Huang, Jiahao;Xu, Jiawei;Wang, Jinjing;Yang, Jianfeng;Wang, Bo;Xiong, Wangdan;Guo, Yanjun;Huang, Jiahao;Wang, Jinjing;Yang, Jianfeng;Wang, Bo;Xiong, Wangdan;Guo, Yanjun;Xu, Jiawei;Wu, Ruixin;Li, Yuan;Xiong, Wangdan;Guo, Yanjun

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关键词： cuticular wax; forage plants; rumen fermentation; metabolites; microbial communities

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2024 年 72 卷 3 期

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收录情况： SCI

摘要： Cuticular wax, a critical defense layer for plants, remains a relatively unexplored factor in rumen fermentation. We investigated the impact of cuticular wax on rumen fermentation using triticale as a model. In total, six wax classes were identified, including fatty acids, aldehydes, alkane, primary alcohol, alkyresorcinol, and beta-diketone, with low-bloom lines predominated by 46.05% of primary alcohols and high-bloom lines by 35.64% of beta-diketone. Low-wax addition (2.5 g/kg DM) increased the gas production by 19.25% (P < 0.05) and total volatile fatty acids by 6.34% (P > 0.05), and enriched key carbohydrate-fermenting rumen microbes like Saccharofermentans, Ruminococcus, and Prevotellaceae, when compared to non-wax groups. Metabolites linked to nucleotide metabolism, purine metabolism, and protein/fat digestion in the rumen showed a positive correlation with low-wax, benefiting rumen microbes. This study highlights the intricate interplay among cuticular wax, rumen microbiota, fermentation, and metabolomics in forage digestion, providing insights into livestock nutrition and forage utilization.

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