CHF is Congenital Hepatic Fibrosis - a recessive disease

CHF affects the liver - foals are small for their age and have a potbelly.

There is no treatment and CHF foals are usually put down.

To date, it has only been found in the Franches-Montagnes breed (all affected horses in that breed trace back to the stallion Elu, born in 1964, and he is an ancestor on both the sires side and the dams side) and it was also found in one Spanish Purebred foal.