Grazing in the spring often leads to a loss of production in dairy cows. Grass tetany may be the cause. The disease causes a decrease in appetite, milk production and milk fat content. The cause: a lack of magnesium, often associated with a drop in ruminal pH.
One of the most effective ways to prevent grass tetany in dairy cows is magnesium supplementation during the risk period. Choosing the supplementation source is quite challenging in practice, magnesium oxide being commonly used to prevent Mg deficiency, but the solubility and therefore the bioavailability varies greatly in practice (1).
Low magnesium status and sub-optimal rumen pH can be no stranger at spring turn out. At Wynnstay we believe the dual functionality of pHix-up, can be harnessed to both safeguard rumen health and enhance magnesium supply at grass.
