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Effect of different opening times on methanogenic potential of different fermentation types of silage during feed-out stage

Author

Listed:
  • Shen, Jiali
  • Luo, Xuan
  • Zhou, Min
  • Zhang, Qi
  • Wang, Yunpu
  • Ruan, Roger
  • Liu, Yuhuan
  • Cui, Xian

Abstract

Aerobic deterioration of silage material is unavoidable during the feed-out stage; therefore, in this study, the influence of the feed-out stage on the methanogenic potential of different silage fermentation types was evaluated. Lactic acid in corn straw silage was the first substance to be completely consumed by 3 days after opening and the pH increased substantially. In homolactic fermentation, yeast and mold proliferated in an aerobic environment; the organic dry matter loss rate was less than 2.0% and cumulative methane yieldorig reduction rate was only 3.9% at 1 day after opening than silage storage. However, these values increased to 18.9% and 34.9%, respectively, 3 days after opening, which were much higher than those obtained under non-homolactic fermentation. Therefore, a feed-out frequency of no more than one day is recommended in practical engineering applications. Meanwhile, promoting non-homolactic fermentation can improve the aerobic stability of raw materials and reduce energy loss.

Suggested Citation

  • Shen, Jiali & Luo, Xuan & Zhou, Min & Zhang, Qi & Wang, Yunpu & Ruan, Roger & Liu, Yuhuan & Cui, Xian, 2024. "Effect of different opening times on methanogenic potential of different fermentation types of silage during feed-out stage," Renewable Energy, Elsevier, vol. 230(C).
    • Handle: RePEc:eee:renene:v:230:y:2024:i:c:s0960148124009510
    DOI: 10.1016/j.renene.2024.120883
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