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A financial analysis was performed to assess the performance of three acaricide-treatment groups of indigenous breeds (Zebu and Nganda) of cattle on a ranch in Luwero District, Uganda. The treatments were based on different frequencies: twice-a-week dipping, once-a-month dipping and no tick contr...


Okello-Onen, J.Mukhebi, A.W.Tukahirwa, E.M.Musisi, G.Bode, E.Heinonen, R.Perry, Brian D.Opuda-Asibo, J.[Financial analysis of dipping strategies for indigenous cattle under ranch conditions in Uganda]Financial analysis of dipping strategies for indigenous cattle under ranch conditions in Uganda
Perry, Brian D.Lessard, P.Norval, R.A.I.Kundert, K.Kruska, R.L.[Climate and vegetation on the distribution of the tick Rhipicephalus appendiculatus in Africa]Climate and vegetation on the distribution of the tick Rhipicephalus appendiculatus in Africa

Three species of wild African ruminants. impala (Aepyceros melampus), sable (Hippotragus equinus, and tsessebe (Damaliscus lunatus), were experimentally inoculated with in vitro culture-derived Cowdria ruminantium organisms, the tick-borne causative agent of heartwater in domestic ruminants, to d...


Peter, T.F.Anderson, E.C.Burridge, M.J.Perry, Brian D.Mahan, S.M.[Susceptibility and carrier status of impala, sable and tsessebe for Cowdria ruminantium infection (heartwater)]Susceptibility and carrier status of impala, sable and tsessebe for Cowdria ruminantium infection (heartwater)

Studies on seasonality and population dynamics of ticks on indigenous cattle and their crosses (calves) were carried out in Buruli Ranching Scheme, Nabiswera, Luwero District of Uganda on three treatment groups of animals: group 1 (twice a week dipping), group 2 (once a month dipping) and group 3...


Okello-Onen, J.Tukahirwa, E.M.Perry, Brian D.Rowlands, G.J.Nagda, S.M.Musisi, G.Bode, E.Heironen, R.Mwaji, W.Opuda-Asibo, J.[Population dynamics of ticks on indigenous cattle in a pastoral dry to semi-arid rangeland zone of Uganda]Population dynamics of ticks on indigenous cattle in a pastoral dry to semi-arid rangeland zone of Uganda
Young, A.S.Morzaria, S.P.Dolan, T.T.Musoke, A.J.Perry, Brian D.[Prospects for improved control of tick-borne diseases in Africa]Prospects for improved control of tick-borne diseases in Africa
Norval, R.A.I.Perry, Brian D.Meltzer, M.I.[Factors affecting the distribution of the ticks Amblyomma hebraeum and Amblyomma variegatum in Zimbabwe. Implication of reduced acaricide usage]Factors affecting the distribution of the ticks Amblyomma hebraeum and Amblyomma variegatum in Zimbabwe. Implication of reduced acaricide usage
Norval, R.A.I.Perry, Brian D.[The introduction, spread and subsequent disappearance of the Brown Ear tick (Rhipicephalus appendiculatus) from the southern Lowveld of Zimbabwe]The introduction, spread and subsequent disappearance of the Brown Ear tick (Rhipicephalus appendiculatus) from the southern Lowveld of Zimbabwe

Compulsory short-interval dipping of cattle for tick control has been enforced in Zimbabwe since the early part of this century. Intensive dipping was initially introduced as a measure to control East Coast fever (ECF), following its introduction from eastern Africa. Dipping was subsequently foun...


Norval, R.A.I.Perry, Brian D.Hargreaves, S.K.[Tick and tick-borne disease control in Zimbabwe: What might the future hold]Tick and tick-borne disease control in Zimbabwe: What might the future hold

Adult Amblyomma hebraeum ticks, the principle vector of heartwater (cowdriosis) of domestic ruminants in southern Africa, were collected in pheromone traps placed in Kruger National Park, an exclusively wildlife sanctuary in South Africa. These ticks transmitted Cowdria ruminantium, the rickettsi...


Peter, T.F.Bryson, N.R.Perry, Brian D.O'Callaghan, C.J.Medley, G.F.Smith, G.E.Mlambo, G.Horak, I.G.Burridge, M.J.Mahan, S.M.[Cowdria ruminantium infection in ticks in the Kruger National Park]Cowdria ruminantium infection in ticks in the Kruger National Park

Analysis of the transmission dynamics of Cowdria ruminantium, the tick-borne rickettsial agent of heartwater in ruminants, requires accurate measures of infection in vector populations. To obtain these, Amblyomma hebraeum ticks were collected at two heartwater-endemic locations in the lowveld and...


Peter, T.F.Perry, Brian D.O'Callaghan, C.J.Medley, G.F.Mlambo, G.Barbet, A.F.Mahan, S.M.[Prevalence of Cowdria ruminantium infection in Amblyomma hebraeum ticks from heartwater-endemic areas of Zimbabwe]Prevalence of Cowdria ruminantium infection in Amblyomma hebraeum ticks from heartwater-endemic areas of Zimbabwe

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