Originally Posted by NdAppy
He is the one that the HYPP mutation started with if that is what you are asking...
But at this point in time, no he is not the only carrier, many, many horses that trace back to him are afflicted/carriers of HYPP...
Yes to the top statement. Because I know any horse that goes back to him and are postive got it from him. Just curious if there were any non related cases.