Fast-growing pasture creates risk of grass tetany in lactating cows

Surges in forage growth create grass tetany risk across many beef operations. Andrea Bedford shares ways to reduce the risks.

While grass tetany is a seasonal risk that follows predictable patterns, producers may need to monitor animals closely in areas where wildfires burned and forage grasses are recovering.

Source: Bovine Veterinarian, March 23, 2026. Link. Risk mitigation should focus on:

• Ensuring high-magnesium mineral is available before and during turnout.
• Monitoring intake closely, rather than assuming consumption.
• Placing feeders in high-traffic areas to encourage consistent use.

Also see:

• Drought ready; planning and pasture management, Hereford World, March 2026. Link.
• Search results for: grass tetany, AHD Archives. Link.

 INSIGHTS: This recent post focused on spring pasture development to keep it growing through the season <Link>.

Photo courtesy of Neidig Farms Cattle Company, Battle Creek, Nebraska