Originally Posted by FehrGroundRanch
It is a genetic defect and surgery is needed to correct this in MOST cases. It's pretty unethical in my opinion to breed a horse with this problem. Do you want all the buyers of your colts to have to get surgery on their colts? You wouldn't be a very well respected breeder if that were the case.
As I said it is a female gene and therefore is not passed on to the colts most of the time. I inadvertently bred to a crypt years ago and that colt was fine-even though he was outstanding he was gelded.