College of Grassland Science and Technology, China Agricultural University, Beijing, China.
College of Animal Science and Technology, China Agricultural University, Beijing, China.
Bioresour Technol. 2022 Sep;360:127429. doi: 10.1016/j.biortech.2022.127429. Epub 2022 Jun 3.
In order to increase the utilization of herbal residues, realize efficient utilization of resources, the bacterial community and anaerobic fermentation characteristics of alfalfa ensiling treated with 36 kinds of herbal residues were studied. All the herbal residues improved the anaerobic fermentation quality in different degrees, indicated by lower pH, NH-N and butyric acid concentrations. However, the contents of lactic and acetic acids varied widely in silage with different herbal residues. Pearson's correlation analysis showed that the improved fermentation quality was closely associated with the variation of lactic acid bacteria community. Consequently, the herbal residues could improve anaerobic fermentation quality by stimulating desirable Lactobacillus species and inhibiting undesirable microbes. This study provides new insights for efficient utilization of herbal residues.
为提高草本废弃物的利用率，实现资源的高效利用，研究了 36 种草本废弃物处理的紫花苜蓿青贮的细菌群落和厌氧发酵特性。所有的草本废弃物都不同程度地提高了青贮的厌氧发酵质量，表现为 pH 值、NH-N 和丁酸浓度降低。然而，不同草本废弃物青贮的乳酸和乙酸含量差异很大。皮尔逊相关性分析表明，发酵质量的改善与乳酸菌群落的变化密切相关。因此，草本废弃物可以通过刺激理想的乳杆菌种类和抑制不良微生物来改善厌氧发酵质量。本研究为高效利用草本废弃物提供了新的思路。
