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首页> 外文期刊>Tropical Animal Health and Production >The Effect of Supplementation with Fresh Browse of Ziziphus mauritiana or Combretum aculeatum on Feed Intake, Nitrogen Utilization and Growth of Grazing Range Sheep
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The Effect of Supplementation with Fresh Browse of Ziziphus mauritiana or Combretum aculeatum on Feed Intake, Nitrogen Utilization and Growth of Grazing Range Sheep

机译：补充新鲜浏览的西葫芦或短吻菌对放牧绵羊饲料摄入，氮利用和生长的影响

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摘要

The influence of 0, 60 or 120 min access to a grove of either Ziziphus mauritiana (Ziziphus) or Combretum aculeatum (Combretum) on forage intake and on the digestibility, growth and excretion of nutrients was determined using 40 Oudah rams grazing for 7 h/day on poor-quality dry season pasture in the Sahel. The effects of browse species and browsing duration (0, 30, 60 or 120 min) on the ruminal ammonia content were also evaluated using 8 mature fistulated rams. Ziziphus increased both total digestible organic matter and total dry matter intakes per (kg live weight)0.75 without decreasing herbage intake, whereas 60 or 120 min access to Combretum reduced herbage intake by 6.3% and 4.2%, respectively. The digestibility of the diet decreased (p<0.05) with the duration of access to the groves. Despite the provision of more nitrogen (N) than in the control diet, ruminal NH3-N decreased 24 h after browsing commenced. The reduced live weight gain of sheep browsing Combretum may indicate more deleterious compounds in Combretum than in Ziziphus. Ziziphus appears to have more potential than Combretum to increase sheep production in low-input crop/livestock systems.
机译：使用40只Oudah公羊放牧7 h /萨赫勒地区劣质旱季牧场的一天。还使用8个成熟的带孔公羊评估了浏览种类和浏览持续时间（0、30、60或120分钟）对瘤胃氨含量的影响。 Ziziphus使每公斤体重（kg体重）的总可消化有机物和总干物质摄入量增加0.75 ，而没有减少牧草的摄入量，而60或120分钟进入Combretum则分别使牧草的摄入量减少了6.3％和4.2％。日粮的消化率随进入小树林的时间而降低（p <0.05）。尽管提供了比对照饮食更多的氮（N），但浏览开始后24小时瘤胃中的NH3 -N减少了。在Combretum中浏览绵羊的活体体重增加减少可能表明Combretum中有害的化合物比Ziziphus中的有害。在低投入的作物/牲畜系统中，Zipziphus似乎比Combretum具有更大的潜力来增加绵羊的产量。

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