THIAMINE, VITAMIN B1, DEFICIENCY IN EQUINES, BRACKEN, HORSETAIL POISONING
 
Description    Equine Thiamine Deficiency can be caused by prolonged ingestion of the thiaminase-containing plants bracken fern (PTERIDIUM AQUILINIUM) or horsetail (EQUISETUM RAMOSISSIMUM). Can also be induced by the drug amprolium.
 
Species   Equine
 
Signs   Abnormal proprioceptive positioning, Agalactia, Anorexia, Arrhythmia, Ataxia, Blindness, Bradycardia, Cold skin, Dullness, Dysmetria, Exercise intolerance, Fever, Generalized weakness, Inability to stand, Lack of growth or weight gain, Opisthotonus, Paraparesis, Seizures or syncope, Tachycardia, Trembling, Tremor, Underweight, poor condition, thin, emaciated, unthriftiness, ill thrift, Weak pulse, Weight loss
 
References   Caloni F. Plants poisonous to horses in Europe. Eq Vet Educ 2015;27:269 [Web Reference]
Cortinovis C. Epidemiology of intoxication of domestic animals by plants in Europe. Vet J 2013;197:163 [Web Reference]
Dawson DR. Toxins and Adverse Drug Reactions Affecting the Equine Nervous System. Vet Clin N A Eq Pract 2011;27:507 [Web Reference]
Copyright © 2017 Cornell University College of Veterinary Medicine