Originally Posted by kitten_Val
Wow! Is it the only breed which require those?
Nope, the Arabian Horse Association also requires DNA typing of any animal that's going to be used for breeding.
I believe any horse registered now with the AHA has to be DNA typed even if it's a gelding, in order to prove parentage.
Before DNA, the AHA used blood typing for breeding animals. The AHA does allow AI, and has since it became a viable way of breeding.