ONION, ALLIUM, POISONING IN RUMINANTS AND HORSES
 
Description    Ingestion of large amount of onion (ALLIUM sp.) can be toxic. Heinz bodies are present in red cells and there is hemolytic anemia. Sheep and goats are more resistant than horses and cattle.
 
Species   Bovine, Equine, Caprine, Ovine
 
Signs   Abnormal breath odor, Abortion or weak newborns, Anorexia, Ataxia, Dehydration, Dullness, Dysmetria, Dyspnea, Fever, Generalized weakness, Hemoglobinuria or myoglobinuria, Icterus, Inability to stand, Increased respiratory rate, Pale, Red or brown urine, Rumen hypomotility or atony, Sudden death, Tachycardia
 
References   Cortinovis C. Epidemiology of intoxication of domestic animals by plants in Europe. Vet J 2013;197:163 [Web Reference]
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