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Effects of Lactic Acid Bacterial Inoculants on Fermentation Quality, Bacterial Community, and Mycotoxins of Alfalfa Silage under Vacuum or Nonvacuum Treatment
Content Provider | MDPI |
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Author | Fan, Xiaomiao Zhao, Shanshan Yang, Fengyuan Wang, Yuan Wang, Yanping |
Copyright Year | 2021 |
Description | To investigate the effects of lactic acid bacterial (LAB) inoculants and vacuuming on the fermentation quality and bacterial community, alfalfas were ensiled with or without a commercial LAB YX or Lactobacillus plantarum strain ZZ꒓ for 10, 30, 60, and 90 days while undergoing either vacuum (V) or nonvacuum (NV) treatment. At 90 days, analysis of the microbial community by high-throughput sequencing was performed, and contents of aflatoxin B1 and deoxynivalenol (DON) mycotoxins in alfalfa silage were determined. In all inoculated alfalfa silage, irrespective of V or NV treatment, lactic acid (LA) content increased, pH (p < 0.05), and ammonia nitrogen (p < 0.05) content decreased, and no butyric acid was detected. Lactobacillus or Pediococcus became the dominant genus, and the abundance of Garciella decreased in alfalfa silage with the addition of either inoculant. The LAB inoculants YX and ZZ꒓ helped reduce the mycotoxin content in alfalfa silage. The abundance of Garciella in the control and DON content in all alfalfa silage groups were higher (p < 0.05) in NV than V. In summary, LAB inoculants and vacuuming had a positive influence on alfalfa silage quality, and LAB inoculants were effective in reducing mycotoxins in silage alfalfa. |
Starting Page | 2614 |
e-ISSN | 20762607 |
DOI | 10.3390/microorganisms9122614 |
Journal | Microorganisms |
Issue Number | 12 |
Volume Number | 9 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-12-17 |
Access Restriction | Open |
Subject Keyword | Microorganisms Agriculture and Animal Production Alfalfa Silage Vacuum Treatment Nonvacuum Treatment Fermentation Quality Inoculants Microbial Community Mycotoxins |
Content Type | Text |
Resource Type | Article |