Tag: grass tetany

Grass tetany (hypomagnesaemia) is a serious and often sudden condition in dairy and beef cows caused by low magnesium levels, commonly occurring during periods of lush grass growth in spring and autumn. It can lead to nervous behaviour, muscle tremors, reduced milk yield, and in severe cases, sudden death if not addressed quickly. Irish grazing systems are particularly at risk due to rapidly growing grass low in magnesium and high in potassium, which reduces absorption. Preventing grass tetany relies on consistent and effective mineral supplementation. Terra NutriTECH provides the solution through precision dosing systems, delivering accurate levels of magnesium and essential minerals through water or feed daily—ensuring consistent intake, protecting herd health, and maintaining performance during high-risk grazing periods.