Wu Baiyila, Hu Zongfu, Wei Manlin, Yong Mei, Niu Huaxin
College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, China.
Front Microbiol. 2022 Jul 29;13:928731. doi: 10.3389/fmicb.2022.928731. eCollection 2022.
is an important crop that can be fed to ruminants. The purpose of this study was to investigate the roles of and in fermentation quality, aerobic stability, and dynamics of wilted silage microorganisms. Wilted silages were ensiled with/without and . After 14 and 56 days of ensiling, the silos were opened and subjected to a 7-day aerobic deterioration test. This study looked at the composition of fermentation products as well as the microbial communities in silage. Silage inoculated with and had an increased lactic acid content as well as lactic acid bacterial (LAB) quantity, but a decrease in pH and levels of butyric acid, 2,3-butanediol, and ethanol was observed during ensiling. Non-treated and -treated silages deteriorated in the 7-day spoilage test after opening day-14 silos, whereas -inoculated silage showed no signs of deterioration. abundance increased in the 7-day spoilage test after opening day-56 silos, while undesirable microorganisms such as , , and molds, namely, and were inhibited within - and -inoculated silages. The composition of fermentation products was related to the bacterial community, particularly , , and . To summarize, - and -inoculated silage enhanced fermentation quality during ensiling and inhibited aerobic spoilage in a 7-day spoilage test of 56 days ensiling within wilted silage.
是一种可用于喂养反刍动物的重要作物。本研究的目的是调查[具体物质1]和[具体物质2]在萎蔫[作物名称]青贮饲料的发酵质量、有氧稳定性及微生物动态变化中的作用。将萎蔫的[作物名称]青贮饲料分别添加/不添加[具体物质1]和[具体物质2]进行青贮。青贮14天和56天后，打开青贮窖并进行为期7天的有氧变质测试。本研究观察了青贮饲料中发酵产物的组成以及微生物群落。接种了[具体物质1]和[具体物质2]的青贮饲料乳酸含量和乳酸菌数量增加，但在青贮过程中pH值以及丁酸、2,3-丁二醇和乙醇含量下降。在打开14天的青贮窖后进行的7天变质测试中，未处理和仅添加[具体物质2]的青贮饲料发生了变质，而接种了[具体物质1]的青贮饲料没有变质迹象。在打开56天的青贮窖后进行的7天变质测试中，[具体物质1]的丰度增加，而在接种了[具体物质1]和[具体物质2]的青贮饲料中，诸如[具体微生物1]、[具体微生物2]和霉菌（即[具体霉菌1]和[具体霉菌2]）等不良微生物受到抑制。发酵产物的组成与细菌群落有关，特别是[具体细菌1]、[具体细菌2]和[具体细菌3]。总之，接种了[具体物质1]和[具体物质2]的青贮饲料在青贮过程中提高了发酵质量，并在萎蔫[作物名称]青贮饲料56天青贮后的7天变质测试中抑制了有氧变质。
