According to research results recently published in the Journal of the American Veterinary Medical Association, the beta-agonists zilpaterol and ractopa-mine don't appear to have an effect on fatigued cattle syndrome.That's according to Dan Thomson, the Jones professor of epidemiology and production medicine at the Kansas State University College of Veterinary Medicine. Thomson recently reported on the results of nearly three years of research into the issue, which first surfaced in the summer of 2013.
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机译：根据《美国兽医医学杂志》（Journal of the American Veterinary Medical Association）最近发表的研究结果，β激动剂齐帕特罗和非那巴胺似乎对疲劳牛综合症没有影响。堪萨斯州立大学兽医学院生产医学。汤姆森（Thomson）最近报告了对该问题进行近三年研究的结果，该研究于2013年夏天首次浮出水面。
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