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Improving the fermentation quality of wheat straw silage stored at low temperature by psychrotrophic lactic acid bacteria

文献类型： 外文期刊

作者： Zhang, Miao 1 ; Lv, Haoxin 1 ; Tan, Zhongfang 1 ; Li, Ya 1 ; Wang, Yanping 1 ; Pang, Huili 1 ; Li, Zongwei 1 ; Jiao, Zhen 1 ;

作者机构： 1.Zhengzhou Univ, Coll Phys & Engn, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450001, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Crops & Utilizat Nucl Technol, Hangzhou, Peoples R China

关键词： lactic acid bacteria;low temperature;psychrotrophic;silage;temperature rising

期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）

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收录情况： SCI

摘要： This study aimed to explore the feasible approaches to develop a silage production technique in regions with low temperatures. An effective low-temperature silage technology system was constructed and two frigostable Lactobacillus (L.) strains isolated from alpine pastures were selected and proved to be available for wheat straw silage at 5 degrees C. The strains QZ227 and QZ887 were both identified as L. plantarum according to the phenotype, 16S rRNA, and RecA gene analysis. QZ227, QZ887 and a commercial inoculant FG1 consisting of L. plantarum were effective for improving the fermentation quality of wheat straws silage at 5 degrees C for 30days as indicated by the higher content of lactic acid and for 60days by lower pH values, while the control with sterile water instead conferred reduced benefits. Additionally, silages fermented at low temperature proved to be acceptable for feeding livestock after being placed in a simulated environmental temperature of 20 degrees C for 14days to detect its edibility during the early spring when the temperature begins to rise. Both QZ227 and QZ887 showed potential applications of silage making in frigid areas and were effective inoculants in a low-temperature silage technology system.

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