Producers should be aware of the risk of cyanide or prussic poisoning in cattle, goats and other ruminants.
Sudangrass, johnsongrass, sorghums and sorghum-sudangrass hybrids contain cyanogenic glycosides. When the plant undergoes a stressful event such as cutting, wilting, freezing or drought, the plant cells rupture which allows the cyanogenic compounds to produce poisonous cyanide.