Horses > Feeding & Nutrition
Thanks for any help you can provide.
Black Patch is a fungal disease caused by Rhizocotonia leguminicola that can be found on clover or alfalfa leaves. The lesions are blackish brown and irregular shaped on the leaf of the clover plant. The rainy conditions and high humidity of this past year were right for the development of Rhizoctonia leguminicola.
The slobbering you mentioned is specifically caused by slaframine which is an indolizidine alkaloid and a metablite of Rhizoctonia leguminicola. After horses eat the fungus-infected clover or alfalfa for several days, they begin to salivate excessively and lose weight. Pregnant mares may abort if they continue to consume the infected clover or alfalfa. Recovery occurs rapidly once horses have been removed from the infected pasture.
Problem pastures can be used for animals if they are mowed, the infected hay is removed, and the regrowth has no brown spotting on the leaves.
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