Effects of Lactic Acid Bacteria Inoculants and Stage-Increased Storage Temperature on Silage Fermentation of Oat on the Qinghai-Tibet Plateau

被引：3

作者：

Li, Lin ^{[1
]}

Zhao, Hongwen ^{[2
]}

Gou, Wenlong ^{[2
]}

Lu, Guangrou ^{[1
]}

Xiao, Bingxue ^{[2
]}

Chen, Chao ^{[1
]}

Li, Ping ^{[1
,2
]}

机构：

[1] Guizhou Univ, Coll Anim Sci, Guiyang 550025, Peoples R China

[2] Sichuan Acad Grassland Sci, Chengdu 624400, Peoples R China

来源：

FERMENTATION-BASEL | 2022年 / 8卷 / 11期

关键词：

oat silage; lactic acid bacteria; stage-increased storage temperature; fermentation parameters; Qinghai-Tibet Plateau; QUALITY; COMMUNITY; ADDITIVES; RYEGRASS;

D O I：

10.3390/fermentation8110631

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Ensiling is a simple and effective method of alleviating a shortage of forage for ruminants. This study aimed to investigate the effects of lactic acid bacteria (LAB) inoculants and stage-increased temperature on the fermentation characteristics and chemical composition of oat silage on the Qinghai-Tibet Plateau. The silage was treated with local laboratory inoculant (I) and commercial inoculant (S) and stored at ambient temperature (<10 degrees C) or stage-increased (5, 10 and 15 days) temperatures of 10 degrees C and 15 degrees C for 60 days. The results showed that stage-increased storage temperature can improve silage fermentation. Compared with 10 degrees C, a stage-increased storage temperature of 15 degrees C effectively (p < 0.05) promoted the fermentation rate of silage by increasing the dominance of Lactiplantibacillus plantarum, with higher lactic, acetic and propionic acid contents and a lower ammonia-N ratio of the total N and final pH value. Compared with S, treatment with I increased the water-soluble carbohydrate and lactic acid contents and decreased the ammonia-N ratio of the total N and final pH value. This work demonstrated that increasing the storage temperature in stages using a warming infrastructure facilitates the preservation of oat silage in cold regions, and the inoculation of lactic acid bacteria could advance silage fermentation on the Qinghai-Tibet Plateau.

引用

页数：8

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