Avoid Prussic Acid Poisoning After Frost

Remove livestock from sudangrass, sorghum-sudangrass, and johnsongrass pastures for two weeks after the first killing frost.  This will preventing prussic acid poisoning.  All classes of livestock are susceptable to prussic acid; cattle, horses, sheep and goats.  Also,  watch for new shoot regrowth on partially frost-killed plants. Direct grazing of these fresh shoots can be toxic.  Hay made from sudangrass, sorghum-sudangrass, and johnsongrass can be safely feed after waiting two weeks.

Prussic acid is also a problem with wilted cherry leaves.  Prussic acid also called hydrocyanic acid posions the blood's ability to transport oxygen.  Symptoms include difficulty breathing, vertigo, spams and death.  The problems will appear shortly after consuming event a small amount of leaves.  Death often occurs within one hour.

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