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Effects of lactic acid bacteria and molasses on fermentation dynamics, structural and nonstructural carbohydrate composition and in vitro ruminal fermentation of rice straw silage

文献类型： 外文期刊

作者： Zhao, Jie 1 ; Dong, Zhihao 1 ; Li, Junfeng 1 ; Chen, Lei 1 ; Bai, Yunfeng 2 ; Jia, Yushan 3 ; Shao, Tao 1 ;

作者机构： 1.Nanjing Agr Univ, Inst Ensiling & Proc Grass, Coll Agrograssland Sci, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Nanjing 210014, Jiangsu, Peoples R China

3.Inner Mongolia Agr Univ, Minist Agr, Key Lab Forage Cultivat Proc & High Efficient Uti, Hohhot 010018, Peoples R China

关键词： Rice Straw; Molasses; Lactobacillus plantarum; Silage; In vitro Fermentation

期刊名称：ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES （ 影响因子：2.509； 五年影响因子：2.604 ）

ISSN： 1011-2367

年卷期： 2019 年 32 卷 6 期

页码：

收录情况： SCI

摘要： Objective: This study was to evaluate the fermentation dynamics, structural and nonstructural carbohydrate composition and in vitro gas production of rice straw ensiled with lactic acid bacteria and molasses. Methods: Fresh rice straw was ensiled in 1-L laboratory silos with no additive control (C), Lactobacillus plantarum (L), molasses (M) and molasses+Lactobacillus plantarum (ML) for 6, 15, 30, and 60 days. After storage, the silages were subjected to microbial and chemical analyses as well as the further in vitro fermentation trial. Results: All additives increased lactic acid concentration, and reduced pH, dry matter (DM) loss and structural carbohydrate content relative to the control (p<0.05). The highest organic acid and residual sugar contents and lignocellulose reduction were observed in ML silage. L silage had the highest V-score with 88.10 followed by ML silage. L and ML silage improved in vitro DM digestibility as compared with other treatments, while in vitro neutral detergent fibre degradability (IVNDFD) was increased in M and ML silage (p<0.05). M silage significantly (p<0.05) increased propionic acid (PA) content and decreased butyric acid content and acetic acid/PA as well as 72-h cumulative gas production. Conclusion: The application of ML was effective for improving both the fermentation quality and in vitro digestibility of rice straw silage. Inclusion with molasses to rice straw could reduce in vitro ruminal gas production.

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