草地学报

›› 2011, Vol. 19 ›› Issue (6): 988-994.DOI: 10.11733/j.issn.1007-0435.2011.06.017

• 研究论文 • 上一篇    下一篇

体外产气法评价青海高原补饲草料与天然草地牧草组合效应

崔占鸿, 刘书杰, 柴沙驼, 郝力壮   

  1. 青海省放牧家畜营养与生态国家重点实验室培育基地 青海省高原放牧家畜动物营养与饲料科学重点实验室 青海高原牦牛研究中心 青海省畜牧兽医科学院, 青海西宁810016
  • 收稿日期:2011-05-23 修回日期:2011-07-15 出版日期:2011-12-15 发布日期:2012-07-09
  • 通讯作者:
  • 作者简介:崔占鸿(1983- ),男,青海西宁人,硕士,助理研究员,主要从事反刍动物营养与饲料学研究,E-mail:cuizhanhong27@yahoo.cn
  • 基金资助:
    青海省科技厅基础研究项目“青海高原反刍家畜饲草料组合效应的评价研究”资助

Evaluation of Associate Effects of Supplementary Herbage,Concentrate Feed and Native Pastures of Qinghai Plateau Using In Vitro Gas Production Technique

CUI Zhan-hong, LIU Shu-jie, Chai Sha-tuo, HAO Li-zhuang   

  1. National Key Lab.Cultivating Base of Plateau Grazing Animal Nutrition and Ecology/Key Lab.of Plateau Grazing Animal Nutrition and Feed Science in Qinghai Province, Qinghai Plateau Yak Research Center, Qinghai Academy of Animal and Veterinary Sciences, Xining, Qinghai Province 810016, China
  • Received:2011-05-23 Revised:2011-07-15 Online:2011-12-15 Published:2012-07-09

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摘要： 采用体外产气法评价了青海高原反刍家畜补饲用燕麦草(Arrhenatherum elatius(Linn.)Pressl)、老芒麦草(Elymus sibiricus L.)和精补料分别按质量比0:100,25:75,50:50,75:25,100:0的比例与藏嵩草(Kobresia tibetica Maxim.)草地型冷季牧草两两组合后的发酵产气特性。结果表明:补饲草料与藏嵩草草地型冷季牧草组合能有效提高单一藏嵩草的消化率;燕麦草和老芒麦草与藏嵩草草地型冷季牧草均以25:75比例组合时较为合适,精补料与藏嵩草草地型冷季牧草以50:50比例组合时较为合适,且各饲草料组合的正组合效应大部分在发酵12～24h时较高,体外发酵48h后其组合效应有下降趋势。研究结果将为该地区草地放牧家畜的营养平衡补饲提供科学依据。

关键词: 青海高原, 体外产气法, 组合效应, 牧草, 补饲

Abstract: This study was conducted using in vitro gas production techniques in order to evaluate fermentation characteristics of mixed pastures by Arrhenatherum elatius(Linn.) Pressl,Elymus sibiricus L.and concentrated feed supplement at the ratios of 0:100,25:75,50:50,75:25 and 100:0 with Kobresia tibeticaMaxim.for ruminants in Qinghai plateau,respectively.Results showed that the digestibility of Kobresia tibeticaMaxim.were improved after mixed with Arrhenatherum elatius(Linn.) Pressl,Elymus sibiricus L.and concentrated feed.The appropriate proportion of either Arrhenatherum elatius(Linn.) Pressl or Elymus sibiricus L.mixed with pasture of Kobresia tibeticaMaxim.grassland types was 25:75.The appropriate proportion of concentrated feed mixed with pastures of Kobresia tibeticaMaxim.grassland types was 50:50.Positive associative effects of most tested combinations increased during 12~24 h fermentation then decreased after 48 h fermentation in vitro.These results provided scientific basis for the nutritional supplementary feeding of grazing animals in this region.

Key words: Qinghai plateau, In vitro gas production technique, Associate effects, Pastures, Supplementary feeding

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