I haven't visited recently, but think it's just 0.4 addax.
A lot of the hoofstock paddocks are actually very spacious and many are pleasant to look at - some even have grass. It makes it all the more frustrating that so many carnivores and primates are kept in such inadequate enclosures.
It all depends on the availability of animals and if they have the space to maintain a breeding herd. Also, you don't know the age of the animals so they could be to old or to young to breed. Please don't just post for the sake of posting. A good rule of thumbs is to ask yourself if your posts add anything to that discussion before posting.