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Twogrooved milkvetch       (Astragalus bisulcatus)

Members of this genus are poisonous, affecting cattle, sheep and horses. Twogrooved milkvetch contains both selenium and swainsonine,the alkaloid responsible for locoism. As little as 2 lbs. can cause acute poisoning in mature cows within a few hours after being eaten. Poisoning symptoms are respiratory problems and paralysis of the hind legs in livestock.

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