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Feeding a natural plant extract affects growth performance in beef cattle

机译：喂养天然植物提取物会影响牛肉中的生长性能

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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：进行该研究以研究天然植物提取物（NPE）对牛肉中生长性能和饲料转化效率的影响。生长杂交阉牛饲喂牧草稻草和两个月的2.5千克/天，然后是3.0公斤/天，进一步四个月，玉米/大豆基浓缩物。提供一半的带子，以每千克浓缩物的6g补充剂的速率提供干燥的NPE混合物的干燥提取物。通过与加入对照浓缩物补充剂的带状器的比较，将含有NPE的浓缩物的浓缩物具有更好的体重增加（P <0.05）。在第五个和第六个月的实验期间，与喂食控制补充剂相比，饲料含有NPE的补充剂的饲料饲料使用的使用效率显着增加（P <0.01）。确定NPE的活性组分的性质是有意义的，其负责在进一步研究中介导肉牛中的生长性能的影响。

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