Neonatal Isoerythrolysis (NI) is a problem that occurs in 1-2% of the equine population.
This disease is a result of the foal absorbing antibodies in the colostrum that attack its own red blood cells resulting in hemolytic anaemia. The clinical symptoms include jaundice (yellow) mucous membranes, anaemia, exercise intolerance and orange or red urine. The disease can be fatal and is expensive to treat.
Foals appear normal at birth, but within the first 6‐72 hours they may develop any of the following signs of disease:
- Weak/lethargic
- Decreased suckle
- Increased heart rate
- Increased respiratory rate and effort
- White or yellow mucous membranes
Taking close observation of your foal post birth and having a foal health check by your veterinarian is a great way to ensure that any early symptoms are picked up and the best treatment is available.