Phosphorus (P) is the mineral most frequently associated with infertility in dairy cows.

Under normal conditions, a P deficiency in dairy cows will result in:

  • Poor appetite
  • Poor production,
  • Pica (craving /eating of abnormal materials)
  • Reproductive disturbances/ infertility.

A moderate deficiency in P may be associated with cows not conceiving when mated, while a more severe deficiency can extend postpartum anestrus (non-cycling activity post calving) due to inactive ovaries.

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