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草业学报 ›› 2009, Vol. 18 ›› Issue (4): 131-137.

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乳酸菌添加剂对王草青贮发酵品质及有氧稳定性的影响

刘秦华,张建国*,卢小良   

  1. 华南农业大学农学院草业科学系,广东 广州 510642
  • 收稿日期:2008-07-31 出版日期:2009-08-20 发布日期:2009-08-20
  • 作者简介:刘秦华(1983-),男,重庆璧山人,在读硕士。
  • 基金资助:
    华南农业大学高级人才引进基金,“十一五”国家科技支撑项目(2006BAD16B03-08)和公益性行业(农业)科研专项经费项目(nyhyzx07-022)资助。

The effects of lactic acid bacteria inoculation on the fermentation quality and aerobic stability of king grass silage

LIU Qin-hua, ZHANG Jian-guo, LU Xiao-liang   

  1. Department of Grassland Science, College of Agriculture, South China Agriculture
    University, Guangzhou 510642, China
  • Received:2008-07-31 Online:2009-08-20 Published:2009-08-20

摘要: 为提高王草青贮发酵品质与有氧稳定性,对材料水分含量(高、中、低)和添加剂(无添加:CK;乳酸菌A:LA;乳酸菌B:LB;乳酸菌A与B混合添加:LA+LB)的影响进行了研究。试验结果表明,所有处理的王草发酵品质都良好,中水分含量王草的发酵品质优于高水分和低水分。LA对王草发酵品质无显著影响,但使高、中水分含量王草发酵品质达到最佳。LB与LA+LB显著增加了高、中水分含量王草的pH值(P<0.05),极显著降低了乳酸/乙酸、乳酸/总酸和乳酸含量 (P<0.01),明显增加了乙酸含量。青贮开封后,LB与LA+LB处理的王草青贮料有氧稳定性较好。

Abstract: The effects of moisture contents (high, moderate and low) and lactic acid bacteria inoculation (LA, LB and LA+LB) on the fermentation quality and aerobic stability of king grass silage were investigated. All the silages were well preserved. The fermentation quality of king grass silages with moderate moisture content were better than those with high and low moisture content. LA inoculation did not significantly influence the fermentation quality of king grass silage, but the fermentation quality of king grass silages with high and moderate moisture contents was improved. LB or LA+LB inoculation increased the pH value (P<0.05) and acetic acid content, but decreased lactic acid content, the rates of lactic acid to acetic acid and lactic acid to total acid (P<0.01). When the silages of king grass were exposed to the air, the aerobic stability of LB and LA+LB inoculated silage were best.

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