I just saw this and found it interesting
Can hunting endangered animals save the species? - 60 Minutes - CBS News
Can hunting endangered animals save the species? - 60 Minutes - CBS News
...if these ranch owners are sincere in their belief that they are keeping the species alive and well, they could spare the lives of some.
Did you watch the video?
As a layperson on this issue, I see the 10% hunting cap as simply a limit these ranches impose to ensure their long term profits remain intact, which in and of itself makes perfect sense to me. While I would agree that the animal rights group is on one extreme, I also think it's a stretch to think the Exotic Wildlife Association (or the ranchers they lobby for), have significant interest in conservation of these species beyond profit. Both sides have much to gain given the massive exposure received from appearing on 60 minutes.
The EFW does not cite any conservation partners on their website that aren't other hunting organizations, among them is the NRA. I take that with a grain of salt as I doubt there are many that would publicly partner with them, even if they were in total agreement with the practices. Their Mission Statement says nothing in my view in terms of meaningful wildlife conservation, only conserving their ability to hunt wildlife.
"I am sure that on occasion they may receive a new animal from one of the ranches..."
If so, I think this could go a long way in supporting their case - just haven't been able to find any specific examples. I too would think it must happen, it's just odd it wasn't raised during the 60 minutes piece.