Wg. Dorgeloh et al., POPULATION-GROWTH OF ROAN ANTELOPE UNDER DIFFERENT MANAGEMENT-SYSTEMS, South African Journal of Wildlife Research, 26(4), 1996, pp. 113-116
Roan antelope Hippotragus equinus equinus is an endangered species in
southern Africa. Appropriate management strategies, under intensive sy
stems, may be to the advantage of roan populations. The exponential ra
te of increase of roan populations under Various degrees of intensive
management was investigated. A one-way analysis of variance was used t
o test the null hypothesis that there is no difference in the rate of
increase between roan populations. The roan population on the Nylsvlei
Nature Reserve had a negative rate of increase. The high exponential
rate of increase (0.2574) of the small Rooipoort population differed s
ignificantly (p < 0.05) from all other populations. This population gr
azed on planted pastures and was fed during the dry season with at lea
st 0.5 kg of supplementary food per day (mixture of lucerne, antelope
cubes and lick). It also had the highest sex ratio. Under intensive ma
nagement, animals may be stocked at a density of up to 20 animals/km(2
). The Spearman's rank correlation coefficient showed that the rate of
increase was correlated with the amount of supplementary feeding, For
the populations investigated no correlation was found with % females,
% calving rate, population size and density.