Blister Beetle Toxicosis in Horses

Christine Navarre, McConnico, Rebecca S.  |  7/27/2006 11:21:33 PM

Blister beetles are ¾- to 1¼-inch-long, narrow-bodied, broad-headed insects that may be found in alfalfa hay originating from certain parts of the United States. One beetle alone won't caust toxicity, but they can gather in large numbers in concentrated clusters of harvested hay.
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