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首页> 外文会议>International Symposium on the Nutrition of Herbivores(ISNH-7); 20070917-22; Beijing(CN) >Feeding a natural plant extract affects growth performance in beef cattle
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Feeding a natural plant extract affects growth performance in beef cattle

机译：饲喂天然植物提取物会影响肉牛的生长性能

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摘要

This study was conducted to investigate the effect of natural plant extract (NPE) on the growth performance and feed conversion efficiency in beef cattle. Growing crossbred steers were fed pasture hay ad libitum and 2.5 kg/day for two months, then 3.0 kg/day for a further four months, of a maize/soya bean based concentrate. Half the steers were offered a supplement of a dried extract of a mixture of NPE at the rate of 6 g supplement per kg of concentrate. By comparison with the steers fed the control concentrate supplement, those fed the concentrate containing the NPE had better weight gain (P＜0.05). During the fifth and sixth month of the experiment the efficiency of use of feed for liveweight gain increased significantly (P＜0.01) in the cattle fed the supplement containing NPE compared to those fed the control supplement. It will be of interest to determine the nature of the active components) of NPE which is/are responsible for mediating the effects on growth performance in beef cattle in further study.
机译：进行这项研究以研究天然植物提取物（NPE）对肉牛生长性能和饲料转化效率的影响。对生长中的杂种公牛以玉米/大豆为基础的浓缩物随意饲喂草干草，每天饲喂2.5千克干草，持续两个月，然后再饲喂3.0千克/天，持续四个月。一半的ers牛以每千克浓缩液补充6克的速度补充了NPE混合物的干提取物。与饲喂对照浓缩饲料补充的ers牛相比，饲喂含有NPE浓缩饲料的母牛体重增加更好（P ＜0.05）。在实验的第五个月和第六个月，与对照组相比，在饲喂含NPE的牛中使用饲料提高体重的效率显着提高（P ＜0.01）。确定NPE活性成分的性质将引起人们的兴趣，NPE负责介导进一步研究对肉牛生长性能的影响。

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