Jackson's hartebeest (Alcelaphus buselaphus lelwel) with wildebeest

I didn't know that this species of Hartebeest was kept? Is this the only individual or do they keep more?

@Ursus the ony one

Technically Jackson's Hartebeest is a hybrid between Lelwel and Coke's Hartebeest, there has been some confusion over this in the past, with Jackson's being used as synonym for Lelwel, but given that Jackson's Hartebeest was described from CW Kenya, which is where hybrids occur and not Lelwel, it should describe hybrids. Which in this case it seems to do as well, given the horn shape, with seemingly outward pointing horns.

only one, not ony.