酶制剂和绿汁发酵液对巨菌草青贮品质的影响

发布时间：2018-02-03 17:16

本文关键词： 添加剂巨菌草乳酸菌发酵青贮品质品质评定　出处：《草业科学》2017年08期 　论文类型：期刊论文

【摘要】：为了大规模开发利用巨菌草(Pennisetum sp.),设置6个青贮处理,分别为无添加(对照)组、添加纤维素酶组、添加绿汁发酵液组、添加纤维素酶+绿汁发酵液(复合1)组、添加木聚糖酶组以及添加木聚糖酶+绿汁发酵液(复合2)组。室温条件下贮存60d后开封,对青贮品质进行分析测定。结果表明,与对照组相比,纤维素酶组的半纤维素含量降低、干物质回收率升高;木聚糖酶组的乳酸、乙酸、丙酸、可溶性碳水化合物含量降低;绿汁发酵液组的pH、气体损失率、氨态氮含量极显著降低(P0.01),乳酸、干物质回收率和可溶性碳水化合物均增加;复合1组的乳酸和乙酸含量增加,pH、半纤维素、干物质回收率和氨态氮含量降低;复合2组的pH、干物质回收率、乙酸、丙酸、氨态氮含量降低,乳酸增加。较纤维素酶组和绿汁发酵液组,复合1组的青贮效果更优。较木聚糖酶组和绿汁发酵液组,复合2组的青贮效果更优。同时,证实巨菌草是适于作青贮原料。
[Abstract]:In order to develop and utilize Penisetum sp. sp. on a large scale, six silage treatments were set up, namely, no adding (control) group, adding cellulase group and adding green juice fermentation broth group. The cellulase green juice fermentation broth (compound 1), xylanase group and xylanase green juice fermentation broth (compound 2) were added. The results showed that, compared with the control group, the hemicellulose content of the cellulase group was lower and the dry matter recovery rate was higher than that of the control group. The contents of lactic acid, acetic acid, propionic acid and soluble carbohydrate in xylanase group were decreased. The pH, gas loss rate, ammonia nitrogen content, lactic acid, dry matter recovery and soluble carbohydrate increased significantly in green juice fermentation liquor group. The contents of lactic acid and acetic acid in compound 1 group increased pH, hemicellulose, dry matter recovery and ammonia nitrogen content decreased. The pH, dry matter recovery, acetic acid, propionic acid, ammonia nitrogen content decreased, lactic acid increased, compared with cellulase group and green juice fermentation broth group. The silage effect of compound 1 group was better than that of xylanase group and green juice fermentation liquid group, and the silage effect of compound 2 groups was better than that of xylanase group and green juice fermentation broth group.
【作者单位】：福建农林大学动物科学学院;
【基金】：国家菌草工程技术研究中心开放基金课题(JCJJ13017) 福建省“大学生创新训练计划”项目(111zc3067)
【分类号】：S816.53
【正文快照】： 巨菌草(Pennisetum sp.)是一种多年生狼尾草属植物,在生长速度和产量以及光合作用效率上均比其它禾本科植物有优势,根系发达,对各种环境都有较强的适应性,种植管理要求不高,可以在热带、亚热带和温带生长[1-4]。其用途广泛,可作为畜禽的优质饲料,可用于栽培食用菌或制浆作为造

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