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Neonatal Isoerythrolysis (NI) - What Every Breeder Needs to Know

In this FHANA Educational webinar given by Dr. Ghislaine Dujovne, DVM, MS, DACT, from the UC-Davis covers Neonatal Isoerythrolysis, commonly referred to as "NI". NI occurs in foals when there is an incompatibility between the foal’s and mare’s blood type. This potentially deadly disease is easy to prevent, but it can be challenging and expensive to treat. Watch the below webinar for a better understanding of what NI is and how to protect your valuable newborn foals. Here are the key takeaways"

  • Blood type your mare! It's well worth the money and a comparison of her blood type with the potential stallion that she will be bred to can either prevent the possibility of NI altogether or help one to prepare properly for the possibility of producing a foal that may have this issue.

  • The incidence of NI seems to be higher in the Friesian breed but may not be related to an inbreeding issue. The answer to this question of a higher prevalence may require additional research to come to a conclusion.

  • NI can occur even with a maiden mare, although it is less likely.

  • There are several tests available to diagnose a foal showing the clinical signs of NI.

  • There are also ways to test the colostrum/milk post-foaling to determine when it is safe for the foal to begin nursing the mare.


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