›› 2012, Vol. 39 ›› Issue (6): 101-104.

• 动物营养与饲料科学 • 上一篇    下一篇

山梨酸对王草青贮品质及其营养成分的影响

李茂1,2, 字学娟1,2,3, 周汉林1,2, 侯冠彧1,2, 刘国道1   

  1. 1. 中国热带农业科学院热带作物品种资源研究所,海南儋州 571737;
    2. 中国热带农业科学院热带草业与畜牧研究所,海南儋州 571737;
    3. 海南大学应用科技学院(儋州校区),海南儋州 571737
  • 收稿日期:2011-12-09 出版日期:2012-06-20 发布日期:2012-07-02
  • 通讯作者: 周汉林,研究员,硕士生导师。E-mail: zhouhanlin8@163.com E-mail:zhouhanlin8@163.com
  • 作者简介:李茂(1984—),男,四川人,硕士,研究实习员,主要从事热带牧草和反刍动物营养研究。
  • 基金资助:
    中央级公益科研院所基本科研业务专项(PZS066);海南省重点科技项目(090103);农业科技成果转化资金项目(2010GB23260578);中国热带农业科学院院本级项目(1630032012049)。

The Effect of Adding Sorbic Acid on the Fermentation Quality and Nutrient Contents of King Grass Silage

LI Mao1,2, ZI Xue-juan1,2,3, ZHOU Han-lin1,2, HOU Guan-yu1,2, LIU Guo-dao1   

  1. 1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China;
    2. Tropical Grassland and Animal Science Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China;
    3. College of Applied Science and Technology, Hainan University, Danzhou 571737, China
  • Received:2011-12-09 Online:2012-06-20 Published:2012-07-02

摘要: 研究添加不同比例山梨酸对王草青贮发酵品质及营养成分的影响,以确定其适宜的添加量。试验设对照组和5个不同添加比例处理组,添加量分别为0.05%、0.1%、0.15%、0.2%、0.25%。结果表明,添加山梨酸能显著降低青贮饲料pH (P<0.05),提高乙酸、丙酸和总酸含量(P<0.05),添加高于0.1%的山梨酸能显著提高乳酸含量(P<0.05);添加山梨酸能显著提高粗蛋白质(CP)含量(P<0.05),但对干物质(DM)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和可溶性碳水化合物(WSC)含量无显著影响(P>0.05)。因此,从改善王草青贮发酵品质和营养价值综合考虑,王草青贮时添加高于0.15%的山梨酸效果较好。

关键词: 王草; 山梨酸; 发酵品质; 营养成分

Abstract: The experiment was carried out to investigate the influence of adding sorbic acid on the fermentation quality and nutrient contents of King grass (Pennisetum purpureum Rich.?P.americana kinggrass cv) Silage, and to determine the proper application rate of sorbic acid. The treatments were designed as follows: control (0), 0.05%, 0.10%, 0.15%, 0.20% and 0.25% of sorbic acid addition (fresh weight basis of King grass). The results showed that decrease the pH value(P<0.05) and increased the contents of acetic acid, propionic acid and total acid were significantly (P<0.05), and added higher than 0.1% sorbic acid increased the contents of lactic acid were significantly (P<0.05) after 30 days fermentation compared with control. The contents of CP was significantly increased(P<0.05). However, there were not significant difference in DM, NDF, ADF and WSC contents(P>0.05). It could suggest that 0.15% of sorbic acid was the proper application rate.

Key words: King grass; sorbic acid; fermentation quality; nutrient contents

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