– Mark Landefeld, OSU Extension Educator, AgNR, Monroe County (published originally in Farm and Dairy on-line)
Spring is here according to the calendar, but cold temperatures and many water-saturated soils have not made rotational grazing very favorable yet. However, the ground has firmed considerably the last few days in our area and predicted warmer temperatures should promote grass growth so that pasture rotations may be starting soon. As the number of daylight hours increase, temperatures warm, and pastures grow, farm managers should take steps to prevent hypomagnesemia or “grass tetany.”
Grass tetany is associated with cool weather in spring and fall because the metabolism of the plant is slower and its mineral uptake from the soil is reduced. This leads to lower amounts of magnesium (Mg) in the forages livestock graze. Grass tetany is more common on cool-season grass pastures than legume pastures because legumes such as clover and alfalfa tend to have higher magnesium levels in their leaves.
Turning cows out into new lush grass pastures can cause Continue reading Good Management Helps Reduce Grass Tetany