Roan is currently only known to be in heterozygous form. (Rn). Because of this, Roan Percherons only have a 50% chance of passing on their gene with each foal. Blue Roan (Black) is the most common form of roan, although one Red Roan (Chestnut) does exist. A Bay Roan mare was alive, but passed away a few years ago. She had no Bay Roan offspring.
One of the biggest questions I am asked time and again is, "Where can I find a blue roan Percheron?" One of the most well known online breeders is Brad Messersmith of IA. He also advertises in the Draft Horse Journal. I personally am another breeder, but at this time I'm just coming into the program with the new acquisition of a Roan stallion. Before our past stallions were owned by my Parents and I had no say in their future. Both were sold on, one now deceased, the other, a very long ways away.
Most roan horses are dispersed and owned by individual horse owners who like the color but have no real interest in preservation, many have no clue how rare what they own is. Some are aware of this though. Very very few are in actual breeding programs. I will not list anyone with roans unless they themselves would wish to be advertised publicly. It is simply out of respect for them. If they don't have a problem with it, then I am more than happy to send a potential buyer their direction. My knowledge stemmed from countless hours of personal research. I spend a lot of time with 'an ear to the ground', ferreting out roans and new owners.
At this time I estimate around 60 roans to be living within the breed. I know of 6 stallions. Of those 6, 4 I know without a doubt in my mind to be nothing but Roan. 1 is grey+roan, 1 is roan, but potentially also grey. I never saw him in person past his yearling photos. He had a lot of white hair in his face, but that doesn't mean much as some roans do go against the norm and have quite a bit of odd white hair in their face without truly being grey too. Of the 4 roan stallions, 1 has paperwork issues and is not truly registered yet until his DNA is finalized. If it changes, which I hope it does, he would be a welcome addition to the preservation of this dwindling color. At this time, there are only 3 known bloodlines that Roan descends from and through. All three are photographed to the left.