We raise a few registered Shorthorn a few registered Simmentals and a few Commercial crosses of the two. On the deal of appendix. We have a few appendix shorthorns that were bred up off of some of my one of my grandads old brindle wood cows. I stay away from breeding show bloodlines, two much hair, too much Maine influence, and not enough growth.
The key to any breed up or Appendix program is to reach purebred status by upgrading cattle. The key is to use a good producing female to breed up off of. There are quite a few nice shorthorn cattle with the asterix.