您好,欢迎访问河南省农业科学院 机构知识库!

Dynamics of Fermentation Parameters and Bacterial Community in High-Moisture Alfalfa Silage with or without Lactic Acid Bacteria

文献类型: 外文期刊

作者: Zhao, Shanshan 1 ; Yang, Fengyuan 1 ; Wang, Yuan 1 ; Fan, Xiaomiao 1 ; Feng, Changsong 3 ; Wang, Yanping 1 ;

作者机构: 1.Zhengzhou Univ, Coll Phys, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450000, Peoples R China

2.Zhengzhou Univ, Sch Agr Sci, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450000, Peoples R China

3.Henan Acad Agr Sci, Inst Anim Husb & Vet Sci, Zhengzhou 450000, Peoples R China

关键词: alfalfa silage; bacterial community; fermentation quality; high moisture content; high-throughput sequencing; lactic acid bacteria

期刊名称:MICROORGANISMS ( 影响因子:4.128; )

ISSN:

年卷期: 2021 年 9 卷 6 期

页码:

收录情况: SCI

摘要: The aim of this study was to gain deeper insights into the dynamics of fermentation parameters and the bacterial community during the ensiling of high-moisture alfalfa. A commercial lactic acid bacteria (YX) inoculant was used as an additive. After 15 and 30 days of ensiling, the control silage (CK) exhibited a high pH and a high concentration of ammoniacal nitrogen (NH3-N); Enterobacter and Hafnia-Obesumbacterium were the dominant genera. At 60 d, the pH value and the concentration of NH3-N in CK silage increased compared with 15 and 30 d, propionic acid and butyric acid (BA) were detected, and Garciella had the highest abundance in the bacterial community. Compared with CK silage, inoculation of YX significantly promoted lactic acid and acetic acid accumulation and reduced pH and BA formation, did not significantly reduce the concentration of NH3-N except at 60 d, and significantly promoted the abundance of Lactobacillus and decreased the abundance of Garciella and Anaerosporobacter, but did not significantly inhibit the growth of Enterobacter and Hafnia-Obesumbacterium. In conclusion, high-moisture alfalfa naturally ensiled is prone to rot. Adding YX can delay the process of silage spoilage by inhibiting the growth of undesirable microorganisms to a certain extent.

  • 相关文献
作者其他论文 更多>>