Magnesium supplementation of dairy cattle is essential on all dairy farms.  Magnesium supplementation will reduce animal health problems, such as grass tetany and milk fever; and potentially increase milk production.

The magnesium requirement of the modern dairy cow has increased, partly due to increased use of nitrogen (N) and especially potassium (K) fertilisers (better grass management) and partly due to an increase in cow genetic merit.

All cows are to some extent deficient in Magnesium in late pregnancy and early lactation.  High producing cows are more deficient.

Other factors that increase Magnesium requirements of cows during the winter/spring period:

  • Low Magnesium levels, high K levels, and/or high crude protein levels in spring pasture.
  • Cold wet weather in spring depressing grass growth and cow intakes.
  • High cow demand for Magnesium over calving and early lactation.
  • Magnesium deficiency causes grass staggers, however, slightly low levels of magnesium in cows are often limiting production.

If your herd is deficient in Magnesium the first sign is depressed milk yield!!

Using the Terra Liquid Minerals intelligent controller means that accurate dosing of Magnesium can be achieved no matter what the weather, so the cows get the magnesium when they need it most, on cold wet days.

As the Magnesium is injected separately to minerals into the water system, levels can be increased or decreased depending on the time of the year, therefore, ensuring costs are kept to a minimum.

Phone Padraig: (087) 216 5374 or Paul (087) 708 6714 for more information


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