|DISORDER:||Grass Tetany (grass stagger or hypomagnesemic tetany)|
|Plant Species:||Wheat, oat, rye, triticale, rye ryegrass and some perennial cool-season species|
|Causes:||Low bloods levels of Mg (Magnesium) (1-8 mg/100 ml or 18 mg). Occurs usually during gestation and lactation.|
|Mode of Action:||Generally when Mg > 2.2 mg/g in the plant.|
|Animal Symptoms:||Nervousness, muscle twitching, staggering, and eventual convulsions, however the exact etiology is unknown.|
|Conditions:||Soils low in Mg (Magnesium) and P (Phosphorus);
and high in K (Potassium)and N (Nitrogen).
Soils that are hypoxic (low O2), generally heavier textured soils.
When weather condition is cool and cloudy.
|Treatment:||Treat with intravenous solution with calcium gluconate fortified with Mg and P.|
|Prevention:||1. Graze forages high in Mg (legumes) – (grow mixture).
2. Lime with dolomitic limestone (contains Mg).
3. Increase P fertilizer and reduce K and N fertilizer when problem occurs.
4. Supplement with Mg oxides in the mineral mix.