Grass Tetany –Start Preventive Measures Now
Michelle Arnold, DVM, Dr. Jeff Lehmkuhler, Dr. Cynthia Gaskill,
Ohio Beef Cattle Letter
What is “Grass Tetany” and when are cattle most likely to have it? Grass tetany, also known as spring tetany, grass staggers, wheat pasture poisoning, winter tetany or lactation tetany, is a condition due to a low level of magnesium (Mg) in the blood. The disorder in adult cattle begins with muscle spasms and quickly progresses to convulsions, respiratory difficulty, and death.