YEW, TAXUS, POISONING IN RUMINANTS AND HORSES
 
Description    Yew (TAXUS) plants have leaves that are waxy, linear, dark green, and pointed. In horses they are can produce acute lethal cardiotoxicity. Acute and subacute toxicity has been reported in ruminants.
 
Species   Bovine, Equine, Caprine, Ovine
 
Signs   Anorexia, Arrhythmia, Ataxia, Bradycardia, Diarrhea, Dullness, Dysmetria, Dyspnea, Excitement, First degree atrioventricular heart block, Generalized weakness, Head, face, ears, jaw weakness, droop, Hyperesthesia, Hypothermia, Inability to stand, Increased respiratory rate, Jugular pulse, Paraparesis, Peripheral venous distention, Second degree atrioventricular heart block, Seizures or syncope, Sudden death, Tachycardia, Tail weakness, Third degree, complete, atrioventricular heart block, Trembling, Tremor, Vomiting or regurgitation, Weak pulse
 
References   Caloni F. Plants poisonous to horses in Europe. Eq Vet Educ 2015;27:269 [Web Reference]
Payne J. Plant poisoning in farm animals. In Pract 2014;36:455 [Web Reference]
Lovatt F. Sudden death in sheep. In Pract 2014;36:409 [Web Reference]
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