A case of treatment on amitraz toxicosis in a Thoroughbred racehorse
2010
Yang, J.H., Equine Hospital of Busan Race Park, Korea Racing Authority, Busan, Republic of Korea | Song, H.E., Equine Hospital of Busan Race Park, Korea Racing Authority, Busan, Republic of Korea | Lee, K.K., Jeju National University, Jeju, Republic of Korea | Jee, Y.H., Jeju National University, Jeju, Republic of Korea | Woo, H.C., Jeju National University, Jeju, Republic of Korea | Lim, Y.K., Jeju National University, Jeju, Republic of Korea
A 3-year-old female Thoroughbred racehorse was presented following the accidental oral and skin administration of amitraz. This case report describes the clinical signs and the treatment of this horse. Clinical signs of amitraz toxicosis are associated with the stimulation of alpha2-adrenergic receptors. Amitraz is seldom fatal because the effects can be reversed by alpha2-adrenergic antagonists. The horse displayed typical clinical signs of colic, including pawing, small hard drops, tranquillisation, depression, ataxia, muscular incoordination and impaction colic lasting up to 7 days. The syndrome was accompanied by mild dehydration. The horse survived after persistent symptomatic treatment, including the giving of intravenous fluids, antibiotics, multiple doses of mineral oil per os, nonsteroidal anti-inflammatory drugs and dexamethasone intramuscularly and intravenously.
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