I've been brewing this post for a month or so, while I decided what to do.
This spring, I was considering sending Beamer to a farm in Alberta to stand at stud for the season- it would have been a good opportunity for him as I sold all my brood mares last year. One of the requirements was that I get the
5 panel DNA test done that AQHA has for genetic diseases. I thought he would pass perfectly with negative results- but it turns out that he carries one copy of the gene for
HERDA. If you read the link, you will see that one of the horses there is a horse called Poco Pine who this disease traces back to- and he is in
Beamer's pedigree.
A horse that is a carrier, like Beamer, does not have the disease, but when bred to another carrier has a 50%chance of producing a foal with the disease.
Needless to say, I was pretty upset about this and seriously considered Beamer's future as a sire. Do I retire him completely from breeding? Or do I select mares that are not carriers or whose pedigree does not trace back to the horses Poco Pine or Poco Lena?
The issue there is that there is a 50% chance that Beamer could pass on the single gene copy that he carries.
I have made a decision- and that is that I will be selective, and breed only certain mares to him, and only if the mare owner is informed and willing to do a DNA test on the resulting foal to determine if it carries the gene.
I had Coyote Belle tested before I sold her and she was negative for all 5 of the diseases covered by the
5 panel test.. Once I found out that Beamer is a carrier, I tested Josie (Chickory's daughter)- and she is also a carrier.
I feel that I am being a responsible breeder, by making sure that there is no possibility of Beamer being bred to a carrier mare, and as each foal will be tested, the information will stay with that foal so that should any foals be carriers their owners and any future owners if the foal should be sold, will be informed and able to make appropriate decisions should they ever decide to breed. It also means that there will be very few future Beamer babies.
So now, let me introduce you to a mare who is currently in for breeding- a grey appendix mare with absolutely no traces to Poco Bueno or any of his get
She has Dash For Cash and Beduino on her papers, the owners are looking for a rope horse. I am doing a foal share agreement with them, I will get every second foal, and I'm thinking more along the lines of barrel horse.