How dairy farmers can look out for grass tetany

Milder spring weather provides opportunity for dairy farmers to turn out their cows early, but this is also the time to look out for grass tetany. Grass tetany, or hypomagnesaemia, is caused by a lack of magnesium and is common in lactating cows grazing lush spring pasture. Magnesium is vital to ensure correct nerve and muscle function, as well as bone formation. Hypomagnesaemia, which is a result of low blood magnesium, is often known as grass staggers or grass tetany. It is caused by an ins