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首页> 外文学位 >Characterization of new sainfoin populations for mixed alfalfa pastures in western Canada.
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Characterization of new sainfoin populations for mixed alfalfa pastures in western Canada.

机译：加拿大西部混合苜蓿牧场新皂角苷种群的特征。

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摘要

A series of experiments were conducted to compare nine new sainfoin (Onobrychis viciifolia Scop.) populations developed to persist in mixtures with alfalfa (Medicago sativa L.) under a multiple-cut management to mixtures with the standard check variety of sainfoin, Nova. In trials at Lethbridge under rain-fed and irrigated conditions, new sainfoin populations produced higher (P<0.05) dry matter (DM) yields as compared to Nova. New cultivars persisted for three production years in mixed stands with alfalfa accounting for >20% DM at each harvest. Condensed tannin (CT) concentrations in new sainfoin populations were similar to Nova and were higher during the bud as compared to the vegetative and flowering stages. One of the new sainfoin populations, LRC-3519 seeded in alternate rows with alfalfa caused a reduction (p<0.001) in bloat incidence as compared to mixed Nova-alfalfa stands. Bloat incidence was reduced by 98% in LRC-3519-alfalfa stands as compared to Nova-alfalfa stands. Average daily gains (>1.0 kg d -1) of steers on alfalfa-sainfoin mixed pastures were similar (p>0.05). Seeding of these new sainfoin populations in mixed stands with alfalfa could prove to be a means of taking advantage of the productivity of mixed forage legume pastures while preventing bloat in grazing ruminants.
机译：进行了一系列实验，以比较在多重切割管理下与紫花苜蓿（Medicago sativa L.）混合存在的9种新的皂角苷（Onobrychis viciifolia Scop。）种群与标准品味的皂角苷Nova的混合物。在莱斯布里奇的雨养和灌溉条件下进行的试验中，与新星相比，新的皂甙种群产生的干物质（DM）产量更高（P <0.05）。新品种在混合林中持续了三个生产年，苜蓿每次收获时的干物质含量> 20％。与无性系和开花期相比，新的皂素群体中的单宁浓缩浓度与新星相似，并且在芽期较高。与杂种新星苜蓿林分相比，新的沙棘素种群之一LRC-3519与苜蓿轮流接种，导致腹胀发生率降低（p <0.001）。与Nova-alfalfa展位相比，LRC-3519-alfalfa展位的lo肿发生率降低了98％。紫花苜蓿-皂甙混合草场的ers牛平均日增重（> 1.0 kg d -1）相似（p> 0.05）。将这些新的皂甙种群与苜蓿混种后播种，可证明是一种利用混合草料豆科牧草的生产力并防止放牧反刍动物膨胀的方法。

著录项

  • 作者

    Sottie, Edmund Tei.;

  • 作者单位

    University of Lethbridge (Canada).;

  • 授予单位 University of Lethbridge (Canada).;
  • 学科 Animal sciences.;Plant sciences.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 163 p.
  • 总页数 163
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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