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Magnesium in dairy and beef cows

For dairy farmers who have not already checked mineral levels especially magnesium, it is not too late to do so. Low magnesium will contribute to increased metabolic problems and lost milk production in early lactation.

If your cows have grazed fodder beet it would also be a good idea to check phosphorus levels. With regard to beef cows we have already treated animals pre-calving with metabolic issues, related to low magnesium. Blood testing 8-10 cows before calving will help with making decisions around the necessity for magnesium supplementation. This especially applies to earlier calving beef herds and cows that will have limited access to autumn/winter saved grass at calving.