Dynamics of microbial community and fermentation quality during ensiling of sterile and nonsterile alfalfa with or without Lactobacillus plantarum inoculant

被引:212
作者
Yang, Lili [1 ]
Yuan, Xianjun [1 ]
Li, Junfeng [1 ]
Dong, Zhihao [1 ]
Shao, Tao [1 ]
机构
[1] Nanjing Agr Univ, Coll Agrograssland Sci, Inst Ensiling & Proc Grass, Nanjing 210095, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Alfalfa; gamma-Ray irradiation; Ensiling; Lactobacillus plantarum; High throughput sequencing; LACTIC-ACID BACTERIA; AEROBIC STABILITY; CHEMICAL-COMPOSITION; SILAGE; STERILIZATION; DEGRADATION; GRASS; CORN;
D O I
10.1016/j.biortech.2018.12.067
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
To reveal the mechanism of the survival and adaption of inoculated Lactobacillus plantarum during ensiling. Alfalfa was ensiled directly (A1), after gamma-ray irradiation (A0), and after inoculation of the sterile (A0L) or fresh alfalfa (A1L) with Lactobacillus plantarum. The A0L had the higher lactic acid content and lower pH than that in A1L from 3 days of ensiling. Pediococcus was the dominant microbes in A1 silage, followed by Enterococcus and Lactobacillus, while Lactobacillus in A1L outnumbered all other genera at 3 d. In A0L silage, the relative abundance of Lactobacillus increased to 99.13% at day 3. It indicated that Lactobacillus could dominated the fermentation of inoculated silages regardless of the gamma-ray irradiation, although there was a short lag period for irradiated alfalfa.
引用
收藏
页码:280 / 287
页数:8
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