And I think there is a good chance that Orana no longer have their last Addra Gazelle, it is no longer listed on the census.
The number and location of antelope (not so much the cattle and goats) does not paint a very stable or promising future for many of these species in New Zealand zoos.
Going:
-Sitatunga: 1.3 at Hamilton, not likely to be bred again, will disappear in the next 10-15 years.
Uncertain Future:
-Springbok: 1.3 at Auckland, not being bred, 6.8 at Orana seem stable, hopefully can persist for a fair while.
-Blackbuck: 5.11 at Hamilton, large herd, breeding well and stable, but obviously having all animals in one location poses risks regardless of numbers. I'm not sure how likely it is that Hamilton Zoo will keep this species indefinitely, success with Nyala might well see the Blackbuck replaced.
-Sable Antelope: 1.2 at Orana, hopefully these can be bred, but importation urgently needed, fingers crossed for planned import this year from North America.
-Scimitar-horned Oryx: 4.1 at Orana, obviously in major danger of imminent extinction in NZ, importation urgently needed, fingers crossed for planned import this year from North America.
-Waterbuck: 0.3 at Hamilton, 3.4 at Orana, meaning a male for Hamilton would be great, but this may require importation if Orana's males are related, which seems highly likely given Hamilton's animals originated there.
-Nyala: 2.3 at Wellington (the only ones in Australasia), but seem to be doing well given they have only recently been imported. Despite the large number of other antelope species present in the region, especially the larger ones (kudu, eland, oryx, etc), almost all of which desperately need new blood and more spaces, Nyala are the highest priority antelope species in the region, with 113 spaces dedicated across the region, including 21 more in New Zealand. It is very frustrating that other species cannot get support of even 25 spaces (minimum viable population size) across the region, but this species has all these spaces saved with little chance of very many being filled in the forseeable future.
Overall, within ten years it seems likely that the four big zoos will all hold Nyala, as imports see this species establish well here, with Hamilton Zoo also holding Waterbuck (and maybe Blackbuck), and Orana preserving Springbok, Oryx, Sable and Waterbuck.