Mattioli R C, Bah M, Faye J, Kora S, Cassama M
International Trypanotolerance Centre, Banjul, Gambia.
Vet Parasitol. 1993 Mar;47(1-2):139-48. doi: 10.1016/0304-4017(93)90184-o.
Tick burdens, estimated from cumulative tick counts, were determined on N'Dama, Zebu and F1 N'Dama x Zebu crossbred cattle. N'Dama showed significantly fewer ticks than the Zebu and F1 cattle (P < 0.001). A previous trypanosomosis infection did not affect tick burdens on the three genotypes. Amblyomma variegatum had a prevalence of 84.8% and Hyalomma spp. 15.2%, with the ratio similar on all cattle breeds. Trypanosomosis infection increased the serological prevalence of Anaplasma marginale in Zebu and F1 cattle but not in N'Dama cattle. These observations supported the view that N'Dama cattle are less susceptible to tick attachment than Zebu cattle.
根据累计蜱虫计数估算蜱虫负荷量，对恩达马牛、瘤牛以及恩达马牛与瘤牛的F1杂交牛进行了测定。恩达马牛身上的蜱虫明显少于瘤牛和F1杂交牛（P < 0.001）。先前的锥虫病感染并未影响这三种基因型牛的蜱虫负荷量。变异革蜱的感染率为84.8%，璃眼蜱属为15.2%，所有牛品种的这一比例相似。锥虫病感染增加了瘤牛和F1杂交牛中边缘无形体的血清学感染率，但在恩达马牛中未增加。这些观察结果支持了以下观点：恩达马牛比瘤牛更不易被蜱虫附着。
