I couldn't find a source for this part specifically (the reason why I didn't reply immediately), but there's other info I have in regards to the topic.
Zoos are exchanging cheetahs among themselves in order to boost the genetic diversity among the species:
https://www.nytimes.com/2012/07/05/s...d-species.html
http://mailtribune.com/news/since-yo...s-for-breeding
Here's a zoo aware of the problem with genetic diversity and they're breeding cheetahs specifically to overcome it:
https://www.sciencedaily.com/release...0812153221.htm
Anyways, this probably matches the info that you are looking for (though its not from Toronto):
Bingwa is on loan to the Saint Louis Zoo from Wildlife Safari in Winston, Oregon. The cub’s nine-year-old father, Jason, is on loan from White Oak Conservation in Yulee, Florida. The birth of these eight cubs is a result of a breeding recommendation from the AZA Cheetah Species Survival Plan (SSP), a program to manage a genetically healthy population of cheetahs in North American zoos.
Since 1974, the Zoo has been a leader in Cheetah reproductive research and breeding. Over 50 cubs have been born at the Saint Louis Zoo’s Cheetah Breeding Center.
https://www.zooborns.com/zooborns/20...louis-zoo.html
So the problem is known and zoos are actively combating it which is why
wild cheetahs are significantly more inbred than captive cheetahs.
BTW,
here is an interesting book I found on cheetah genetics that I started. It's only a preview, but I'm linking it in case you're interested.
Bookmarks