Doogie, Desert Bighorn are on the endangered species list, just how do you propose to get your ewes? The few permitted herds are for augmentation of wild stocks. Like I said, a few straws of semen from efforts with those herds may become available as surplus, but that's pretty much it.
That goes back to my original question as to why ranches are not doing it. (the endangered list answers that question)
I have seen pure wild bighorn semen for sale. Could you take some of these close bighorn hybrids and remove all ewes from the herd and keep inseminating with pure desert bighorn semen? Getting a 90+% desert big horn (after a few generations) but still keep it classified as a hybrid for hunting or resale purposes?
This is just a question because I'm not in the exotic industry.