Myocardial toxicity in a group of greyhounds administered ractopamine.

  title={Myocardial toxicity in a group of greyhounds administered ractopamine.},
  author={Michael J. Yaeger and Kathleen Mullin and Steve M. Ensley and Wendy A. Ware and Richard E. Slavin},
  journal={Veterinary pathology},
  volume={49 3},
Ractopamine, a synthetic β(2)-adrenoceptor agonist, is widely used as a feed additive in the United States to promote a reduction in body fat and enhance muscle growth in cattle, pigs, and turkeys. It has the potential for illegal use in show and racing animals because it may affect performance via its β-adrenergic agonist properties or anabolic activities. Nine greyhounds were orally administered 1 mg/kg of ractopamine to investigate the ability to detect the drug in urine. Postdosing, 7 of 9… CONTINUE READING
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