草地学报

›› 2004, Vol. 12 ›› Issue (1): 31-35.DOI: 10.11733/j.issn.1007-0435.2004.01.008

• 研究论文 • 上一篇    下一篇

雀稗草产草量、营养价值及饲喂效果的研究

谢国强, 何余勇, 程树芳, 刘经荣, 石庆华, 谢永中, 季梦成   

  1. 江西农业大学, 南昌, 330045
  • 收稿日期:2003-02-01 修回日期:2004-02-18 出版日期:2004-02-15 发布日期:2004-02-15
  • 作者简介:谢国强(1963- )男,江西都昌人,副研究员,研究方向为牧草选育及高产栽培,育成牧草品种2个,获省级科技进步二等奖1项、三等奖3项
  • 基金资助:
    澳大利亚国际农业研究中心(ACIAR)和江西省科技厅的资助,为中澳合作项目研究内容之一,项目合同号为AS/98/35

A Study on Vasey Grass Yield,Nutritive Value and Foraging Effect

XIE Guo-qiang, HE Yu-yong, CHENG Shu-fang, LIU Jing-rong, SHI Qing-hua, XIE Yong-zhong, JI Meng-cheng   

  1. Jiangxi Agricultural University, Nanchang, Jiangxi Province 330045, China
  • Received:2003-02-01 Revised:2004-02-18 Online:2004-02-15 Published:2004-02-15

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摘要： 连续二年测定雀稗草鲜草、干草、干物质、粗蛋白质和可消化干物质产量,分析各生长阶段常规营养成分;进行饲养肉牛效果试验,同时测定干物质消化率。结果表明,雀稗草具有产草量较高、幼嫩时期营养成分含量丰富、干物质消化率高等优点,但后期老化快,抽穗开花后营养价值急剧下降;相关分析结果表明,粗纤维含量与生长天数呈显著正相关(P<0.05),而粗蛋白质含量则呈显著负相关(P<0.05);刈割高度60cm优于50cm;用雀稗草饲喂肉牛有必要补充一定量的精料(5g/kgLW/d)或较多量的豆科牧草。

关键词: 草原学, 雀稗草, 产草量, 营养价值

Abstract: Cut at a height between 50 cm and 60 cm,vasey grass(Paspalum urvillei) was measured for two successive years (April 2001-October 2002) for its yield of fresh grass, hay,dry matter (DM),crude protein,and digestible dry matter (DDM),as well as its nutritive composition at different growth stages.From July 5 to August 30,2002,feeding experiments were conducted to study beef cattle performance and dry matter digestibility with vasey as the basic diet along with 3 supplements: Lotononis fresh, cotton seed meal, and rice bran.Data show that vasey grass boasts relatively higher yield,richer nutrition composition and higher dry matter digestibility (DMD) than other grasses at its early growth stage,though it declines rapidly soon after its heading and blooming,losing its nutritive value all of a sudden. Interrelated analyses indicate that there is a positive relationship between its crude fiber content and growth days (P<0.05), and a negative relationship between its crude protein content and growth days (P<0.05).Vasey grass cut at a height of 60 cm contains more dry matter and digestible dry matter than that cut at 50 cm height. Beef cattle must feed on, besides vasey grass, supplements like concentrates (5 g/kg LW/d) or large amount of legumes.

Key words: Grassland science, Vasey grass (Paspalum urvillei), Grass yield, Nutritive value

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