“Grass tetany is also known as grass staggers, lactation tetany or hypomagnesemia,” said Michelle Arnold, UK extension veterinarian. “Grass tetany is a metabolic disorder caused by reduced magnesium levels in the animals’ blood.”
In general, the condition affects older, early lactation cows, but it can also affect dry cows, young cows and, in rare cases, growing calves.
“You should watch out for cattle that show symptoms such as nervousness, lack of coordination, muscle spasms and staggering. This may lead to convulsions, coma and death,” Arnold explained. “If you suspect cattle are showing signs of grass tetany, you need to contact a veterinarian because early treatment can save animals.”
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