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中国农学通报 ›› 2015, Vol. 31 ›› Issue (11): 45-49.doi: 10.11924/j.issn.1000-6850.2014-2548

所属专题: 生物技术 水稻

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

木聚糖酶对稻草青贮品质的影响

叶杭,张文昌,邹长连,张国轶,陈国富,庄益芬   

  1. 福建农林大学,福建农林大学动物科学学院,,,福建农林大学,福建农林大学动物科学学院
  • 收稿日期:2014-09-19 修回日期:2014-12-16 接受日期:2014-12-18 出版日期:2015-05-06 发布日期:2015-05-06
  • 通讯作者: 庄益芬
  • 基金资助:
    国家菌草工程技术研究中心开放基金课题

Effects of Xylanase on Quality of Rice straw Silage

Zhang Wen-chang,,, and   

  • Received:2014-09-19 Revised:2014-12-16 Accepted:2014-12-18 Online:2015-05-06 Published:2015-05-06

摘要: 为探明木聚糖酶(Xylanase,XYL)添加水平对稻草(Ricestraw)青贮品质的影响,在常规水分和低水分青贮中均设对照和分别添加20、40、80mg/kg木聚糖酶的4个处理组,分别为CON组和XYL1组、XYL2组、XYL3组,均设3个重复,贮存60天开封后测定发酵品质和化学成分。结果表明,较常规水分青贮,低水分青贮的pH升高(P<0.01)、干物质回收率(DMR)增加(P<0.01)。常规水分青贮中,添加木聚糖酶提高了可溶性碳水化合物(WSC)和DMR含量(P<0.01,P<0.05);XYL3组的DMR最高,气体损失率(GLR)和氨态氮(NH3-N)最少。低水分青贮中,随木聚糖酶添加水平升高,pH下降(P<0.01,P<0.05),DMR有升高趋势。因此,在2个水分的稻草青贮中,添加木聚糖酶能够显著改善青贮效果,均以XYL3的添加效果最佳。

关键词: 生物信息学, 生物信息学, 数字农业, 数据库, 比较基因组学

Abstract: This study aimed to prove the effects of different xylanase addition levels on quality of rice straw silage. Three treatment groups added with 20, 40, 80 mg/kg of xylanase respectively and a compared group were set up with conventional and low moisture of rice straw silage. They were named XYL1, XYL2, XYL3 and CON. Each treatment was repeated 3 times. The materials were ensiled for 60 days and opened. The fermentation quality and the chemical composition were analyzed. Compared with conventional silages, DMR (Recovery rate of dry matter), pH of low moisture silages significantly increased (P<0.01). In the conventional ensilaging, WSC (water soluble carbohydrate) and DMR increased by adding xylanase (P<0.01, P<0.05). In the low moisture ensilaging, as the content of xylanase increased, the pH value was decreasing (P<0.01, P< 0.05), DMR had a rising trend. Therefore, in the two moisture contents of rice straw silage, adding xylanase can significantly improve the effect of silage. The effects of XYL3 group in both conventional and low moisture ensilaging were the best.