期刊
BIORESOURCE TECHNOLOGY
卷 265, 期 -, 页码 282-290出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.06.018
关键词
Corn; Bunker-silo silage; Climatic factor; Fermentation quality; Natural microbial community
资金
- earmarked fund for Modern Agro-industry Technology Research System of China [CARS-34]
This study analyzed the variation of microbial communities, their achieved fermentation quality, and the association between microbial diversity and environmental factors after ensiling of 96 samples prepared with bunker-silo in Southwest China. Most of natural corn silages achieved good fermentation, e.g., low pH value (< 4.2) and high levels of lactic acid (36.26-79.83 mg/g DM). Weissella species were the dominant epiphytic bacteria in raw material, while Lactobacillus and Acetobacter species were prevalent in silages. Natural Lactobacillus and Pediococcus species produced more lactic acid during ensiling, while the production of acetic acid was highly positively correlated with both Acetobacter and Bradyrhizobium species. Rainfall and humidity affected community of epiphytic bacteria on the corn material, and the temperature affected richness of bacterial species during ensiling. The results confirmed that microbial community of silages in hot and humid area is unique and climatic factors ultimately affect the fermentation quality through influencing microbial community.
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