Snow W F, Wacher T J, Rawlings P
International Trypanotolerance Centre (ITC), Banjul, Gambia.
Vet Parasitol. 1996 Nov 1;66(1-2):1-11. doi: 10.1016/s0304-4017(96)01003-5.
The prevalence of trypanosome infections in Djallonké sheep and West African Dwarf goats at different sites in The Gambia showed a significant, positive correlation with contemporary assessments of tsetse challenge. A similar correlation was observed in village N'Dama cattle which showed comparable prevalence values in the same areas. Trypanosome prevalences also tended to be higher in horses and donkeys in areas with high tsetse challenge compared with sites with relatively few flies. A ranking of the numbers of tsetse blood-meals from cattle, small ruminants and equines (1:0.06: > 0.03) corresponded with the estimated biomass of these livestock groups (1:0.09:0.05). Observations on the grazing ranges of livestock showed that, while cattle foraged widely into tsetse-infested habitat, sheep, goats and donkeys remained closer to the villages. This difference indicated that, under the management system practised in The Gambia, small ruminants and equines were probably exposed to a lower level of tsetse attack than cattle.
在冈比亚不同地点的贾隆凯绵羊和西非矮山羊中，锥虫感染的流行率与当时采采蝇挑战评估结果呈显著正相关。在村庄的恩达马牛中也观察到类似的相关性，这些牛在相同地区的流行率值相当。与采采蝇相对较少的地点相比，在采采蝇挑战高的地区，马和驴的锥虫流行率也往往更高。来自牛、小反刍动物和马属动物的采采蝇血餐数量排名（1:0.06:>0.03）与这些家畜群体的估计生物量（1:0.09:0.05）相对应。对家畜放牧范围的观察表明，虽然牛广泛觅食到采采蝇滋生的栖息地，但绵羊、山羊和驴仍更靠近村庄。这种差异表明，在冈比亚实行的管理系统下，小反刍动物和马属动物可能比牛受到的采采蝇攻击水平更低。
