i thought they were mixed with the other eurasian animals but the different species tend to stcik to their own little parts of the big reserve. if i'm right then they also share with peres davids deer, another species of deer i've forgotten, bactrain camel. although on the website the lechwe are under the african reserve. the area also has a fenced enclosure for gemsbok (though not stritly in the reserve)
i thought that was part of the eurasiaeserve, as you come out of the african reserve for the 2nd time. i couldn't see any barriers between these and the eurasian reserve so i presumed they were part of the reserve.