I was there a couple of weeks ago, and i'll be visiting again on the 17th next week.
I too noticed the open gates between all enclosures, and I really don't know how they manage to keep the animals separated in their respective enclosures. I even emailed them to ask, but didn't get any response.
The hoofstock are prevented from leaving their enclosures due to the grating/grid at each gate, but what about the baboons, lions and cheetahs?
If I remember, the lion and cheetah enclosures are adjacent, and the gate was wide open. The rangers are constantly patrolling in the trucks but I still think that if a lion decided to make a run for it into the cheetah or any other adjoining enclosure, it would succeed. Unless they've received some kind of training or conditioning that keeps them all in their respective enclosures?
When I was there, it seemed like none of the animals were even interested in approaching the gates leading to the next enclosure, except for one baboon who tried to sneak out on a ranger's truck but was chased back in by the keeper at the gate. Otherwise all the animals kept well away from the gates............it would be interesting to know how they manage this, or if they ever had an experience where a carnivore entered another enclosure and caused havoc.