Exotic Hunting Ranches provide an excellent place to preserve the gene pools of rare animals that are losing some of their home ranges. Breeding and maintaining these animals for profit will assure their continued existence. I don't hunt these ranches, but do not want others from doing so.
Like Rush says, if you want an animal species to prosper, harvest it for food. Are cows, sheep, and pigs anyway near becoming extinct?
The New York Times has become nothing more than one of the scandal check-out-stand papers and this stupid article adds to the proof.
Good Hunting... from Varmint Al
Varmint Al's Hunting Page 
I've heard of that "canned hunting" crap but never understood it.
The worst cheating I've ever done was to let brer buck climb to the
top of the ridge before I shot him so I wouldn't have to drag him so far uphill!