›› 2012, Vol. 20 ›› Issue (4): 784-787.DOI: 10.11733/j.issn.1007-0435.2012.04.030

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Effects of Tannic Acid Additive on the Quality of Kudzu Stem and Leaf Silage

YANG Dong-mei, TAO Shuang-lun, LIANG Jing, LI Jun-nian   

  1. College of Biology Resource and Environment Science, Jishou, Hunan Province 416000, China
  • Received:2012-01-04 Revised:2012-04-23 Online:2012-08-15 Published:2012-08-28

添加单宁酸对青贮葛藤茎叶品质的影响

杨冬梅, 陶双伦, 梁静, 李俊年   

  1. 吉首大学生物资源与环境科学学院, 湖南 吉首 416000
  • 通讯作者: 李俊年
  • 作者简介:杨冬梅(1971-),女,湖南平江人, 副教授, 硕士, 研究方向为动物生产, E-mail: ydm1971@163.com
  • 基金资助:
    湖南省科技计划项目(2002818);国家自然科学基金资助项目(30570285);湖南省重点学科生态学项目;湖南省研究生科技创新基地项目(201103A)资助

Abstract: To investigate the effect of tannic acid additive on the quality of kudzu silage, the sensory evaluation of kudzu silage added 3% and 4% tannic acid was carried out. Both nutrients and organic acid contents were assayed and the loss rate of dry matter in silage. Results showed that tannic acid could significantly decrease the loss rate of dry matter (P<0.05), while significantly increasing the concentrations of water soluble carbohydrate (WSC) and neutral detergent fiber (NDF) of kudzu silage (P<0.05). Propionic acid and butyric acid were not detected in kudzu stem and leaf silage with added tannic acid. Kudzu stem and leaf silage with added tannic acid was light green and had an acid flavor. Results indicated that adding tannic acid in kudzu silage is favorable to maintain nutrients and improve the quality of silage.

Key words: Pueraria lobata, Tannic acid, Silage

摘要: 为探讨添加单宁酸对青贮葛藤(Pueraria lobata (Willd.) Ohwi)茎叶品质的影响,以青绿葛藤茎叶为原料,添加3%和4%单宁酸青贮60 d后,对其进行感官鉴定,并进行有机酸、干物质损失率及营养成分的分析。结果表明:添加单宁酸的贮葛藤茎叶质地松散完整,具有酸香味,干物质损失率显著降低(P<0.05);可溶性碳水化合物和中性洗涤纤维含量显著增加(P<0.05);在添加单宁酸的青贮葛藤茎叶中,未检测出丙酸和丁酸。因此,葛藤青贮时添加单宁酸有利于营养物质的保持,可明显提高其品质。

关键词: 葛藤, 单宁酸, 青贮饲料

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