Originally Posted by Drifting
I believe that's H/H horses. Not sure what their new rules are though if they changed that.
AphC has no rules like that though (except the H/H one I think), and AphC mares can cross-out to QH stallions as long as the mare has regular papers. There's a lot of Impressive in modern day AphC halter horses.
For those who were asking about HYPP earlier, Impressive is the stallion that HYPP was traced to. All Impressive bred horses should be tested for their HYPP status IMO. Now that its under the limelight more, a good amount of people know to ask. Some halter breeders still don't care, they want the muscle that is believed to be associated with HYPP.
I do want to add HYPP does not skip generations. If the Mare and Stallion were N/N, the baby will be too.
I know there was atleast talk of banning breeding of all N/H horses within the AQHA and APHA. However this created a huge uproar because a big chunk of the top halter horses are N/H.