March 27, 2013 at 05:00AM California Horse Racing Board identifies Purina horse feed contaminated with zilpaterol

Purina says it is fully cooperating with investigation; racing board hopes to prevent horses from ingesting the banned substance.



via DVM - Breaking News http://veterinarynews.dvm360.com/dvm/Veterinary+Equine/California-Horse-Racing-Board-identifies-Purina-ho/ArticleStandard/Article/detail/808916?contextCategoryId=378&ref=25