Individual study: Population growth of roan antelope under different management systems
Dorgeloh W.G., van Hoven W. & Rethman N.F.G. (1996) Population growth of roan antelope under different management systems. South African Journal of Wildlife Research, 26, 113-116
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Graze herbivores on pasture, instead of sustaining with artificial foods
A site comparison study in 1995 of five conservation areas on a range of veld habitats in South Africa (Dörgeloh et al. 1996) found that in a population of roan antelope Hippotragus equinus equinus grazed on pasture, the population growth rate was higher than in populations provided solely with imported feed. The rate of increase of the pasture-fed population was higher than that of four other populations that were not pasture-fed (data presented as mean exponential rates). Population sex ratios, calving rates, population sizes and densities were not correlated with rates of population increase. Five conservation areas (each <3,000 ha) were studied. Population data were obtained in winter 1995. At one site, antelopes were grazed on pasture and, in the dry season, fed ≥0.5 kg of supplementary food/day (lucerne, antelope cubes and mineral lick). At the other four sites, antelopes solely received the supplementary feed, in varying proportions.
(Summarised by Nick Littlewood)