Effects of Lactobacillus plantarum and fibrolytic enzyme on the fermentation quality and in vitro digestibility of total mixed rations silage including rape straw
Effects of Lactobacillus plantarum and fibrolytic enzyme on the fermentation quality and in vitro digestibility of total mixed rations silage including rape straw
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植物乳杆菌和纤维分解酶对油菜秸秆全混合日粮青贮饲料发酵品质及体外消化率的影响
DOI：
10.1016/s2095-3119(15)61233-3
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发表时间：
2016-01-01
影响因子：
4.8
通讯作者：
Shao Tao
中科院分区：
文献类型：
--
作者：
Liu Qin-hua;Li Xiang-yu;Shao Tao
研究了乳酸菌（Lactobacillus plantarum，LP）、纤维分解酶（fibrolytic enzyme，EN）、LP + EN组合（LP+EN）对油菜（Brassica campestris L.）稻草（RS）（分别表示为CTMR、LTMR和MTMR）。青贮60 d后，不添加添加剂的TMR青贮料保存良好，但MTMR的pH值高于CTMR和LTMR。除酵母菌数、霉菌数和粗蛋白含量外，CTMR和LTMR的发酵质量、微生物组成、营养成分和体外消化率等指标均无显著差异。CTMR和LTMR青贮的粗蛋白含量、体外中性洗涤纤维消化率（IVNDFD）和体外酸性洗涤纤维消化率（IVADFD）高于MTMR青贮，酸性洗涤纤维（ADF）含量低于MTMR青贮。LP和EN降低了TMR青贮饲料的pH值，提高了干物质（DM）回收率。LP+EN可改善TMR青贮饲料的发酵品质、营养特性和体外消化率，表现为降低pH、ADF含量、提高乳酸含量、体外干物质消化率（IVDMD）和IVNDFD。因此，含干物质7.5% RS的全麦混合青贮，经LP+EN处理后，可作为反刍动物的一种有益饲料。
The aim of the current study was to investigate the effects of a lactic acid bacteria inoculant (Lactobacillus plantarum, LP), fibrolytic enzyme (EN), combination of LP and EN (LP+EN) on fermentation quality, nutritive characteristics and in vitro digestibility of total mixed ration (TMR) silages containing 0, 7.5 and 15.0% (on dry matter basis) of rape (Brassica campestris L.) straw (RS) (denoted as CTMR, LTMR and MTMR, respectively). After ensiling for 60 days, TMR silages without additives were well preserved, but MTMR had higher pH than CTMR and LTMR. There were no differences in other parameters of fermentation quality, microbial composition, nutrition and in vitro digestibility between CTMR and LTMR except for yeast and mold number and crude protein (CP) content. CTMR and LTMR silage had higher CP content, in vitro neutral detergent fiber digestibility (IVNDFD) and in vitro acid detergent fiber digestibility (IVADFD), lower acid detergent fiber (ADF) content than MTMR silage. LP and EN decreased pH and increased dry matter (DM) recovery of TMR silages. LP+EN improved the fermentation quality, nutritive characteristics and in vitro digestibility of TMR silages, showed by lower pH, ADF content, higher lactic acid content, in vitro dry matter digestibility (IVDMD) and IVNDFD. Therefore, It was suggested that TMR silage contained 7.5% RS on a DM basis and treated with LP+EN can be as a useful feed for ruminant.