Blood samples were collected from parasitaemic cattle in the Ghibe Valley, Ethiopia, frozen in liquid nitrogen and transported to Nairobi, Kenya. Twelve of the stabilates were inoculated into individual Boran (Bos indicus) calves and characterised for their sensitivity, in turn, to diminazene ace...
Codjia, V.
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Mulatu, W.
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Majiwa, P.A.O.
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Leak, S.G.A.
,
Rowlands, G.J.
,
Authié, E.
,
D'Ieteren, G.D.M.
,
Peregrine, A.S.
,
[Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium]
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Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium
An average of 840 East African Zebu cattle from nine herds in the Ghibe Valley, southwest Ethiopia were monitored from 1986 to 1990. Each month blood samples were collected from analysis of packed red cell volume and detection of trypanosomes. Animals were found to be parasitaemic and with a PCV ...
Rowlands, G.J.
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Mulatu, W.
,
Authie, A.
,
D'Ieteren, G.D.M.
,
Leak, S.G.A.
,
Nagda, S.M.
,
Peregrine, A.S.
,
[Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections]
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Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections
Approximately 390 East African Zebu calves from birth to 3 years of age and their dams were monitored monthly from 1986 to 1992 in nine village herds in an area of high trypanosomiasis risk in southwest Ethiopia where there was resistance to all available trypanocidal drugs. Cattle were individua...
Rowlands, G.J.
,
Mulatu, W.
,
Authié, E.
,
D'Ieteren, G.D.M.
,
Leak, S.G.A.
,
Nagda, S.M.
,
[Effects of trypanosomiasis on growth and mortality of young East African Zebu cattle exposed to drug-resistant trypanosomes]
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Effects of trypanosomiasis on growth and mortality of young East African Zebu cattle exposed to drug-resistant trypanosomes
In 1986 a project was set up to determine the constraints to production of Zebu cattle under trypanosomiasis risk in the Ghibe valley. Approximately 1800 East African Zebu cattle (EAZC) were resident within the Ghibe valleey during the experimental period (1986 - 1992) and were maintained under t...
Peregrine, A.S.
,
Mulatu, W.
,
Leak, S.G.A.
,
Rowlands, G.J.
,
[Epidemiology of bovine trypanosomiasis in the Ghibe Valley, Ethiopia: Multiple-drug resistance and its effective control]
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Epidemiology of bovine trypanosomiasis in the Ghibe Valley, Ethiopia: Multiple-drug resistance and its effective control
The objective of this study was to apply transition models to distinguish between factors associated with both incident and persistent trypanosome infections. Data collected from 1561 cattle were analyzed from a long-term study involving 8 herds in which both trypanosome infections (a total of 56...
Schukken, Y.H.
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Schaik, G. van
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McDermott, John J.
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Rowlands, G.J.
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Nagda, S.M.
,
Mulatu, W.
,
D'Ieteren, G.D.M.
,
[Transition models to assess risk factors for new and persistent trypanosome infections in cattle - analysis of longitudinal data from the Ghibe Valley, Southwest Ethiopia]
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Transition models to assess risk factors for new and persistent trypanosome infections in cattle - analysis of longitudinal data from the Ghibe Valley, Southwest Ethiopia
A tsetse control campaign was started in January 1991 using a synthetic pyrethroid cypermethrin `pour-on' applied monthly to cattle exposed to high levels of drug-resistant trypanosomes in the Ghibe valley of southwest Ethiopia. In December 1992, a cost-recovery scheme was introduced, and thereaf...
Rowlands, G.J.
,
Mulatu, W.
,
Leak, S.G.A.
,
Nagda, S.M.
,
D'Ieteren, G.D.M.
,
[Estimating the effects of tsetse control on livestock productivity - a case study in southwest Ethiopia]
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Estimating the effects of tsetse control on livestock productivity - a case study in southwest Ethiopia
The TNF-alfa gene on mouse chromosome MMU17 is among the candidates for the trypanosomosis resistance QTG Tirl. Tit t has the largest effect of those loci so far detected which influence degree of resistance to murine trypanosomosis caused by Trypanosome congolense infection. We therefore studied...
The relationship between prevalence of trypanosomal infections (Trypanosoma congolense) and average packed cell volume (PCV) in herds of communally managed adult Angoni breed cattle was investigated in four districts of eastern Zambia. In all areas, regression analyses showed that the herd averag...
Bossche, P. van den
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Rowlands, G.J.
,
[The relationship between the parasitological prevalence of trypanosomal infections in cattle and herd average packed cell volume]
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The relationship between the parasitological prevalence of trypanosomal infections in cattle and herd average packed cell volume
Cattle raised in the Ghibe valley of southwest Ethiopia are exposed to medium to high levels of trypanosomiasis risk and are often given trypanocidal drugs. A benefit-cost analysis was undertaken to evaluate the financial and economic returns generated by cattle raised in the area under a systema...
Itty, P.
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Swallow, B.M.
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Rowlands, G.J.
,
Mulatu, W.
,
D'Ieteren, G.D.M.
,
[The economics of village cattle production in a tsetse infested area of southwest Ethiopia]
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The economics of village cattle production in a tsetse infested area of southwest Ethiopia
Rowlands, G.J.
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Swallow, B.M.
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Kristjanson, Patricia M.
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Leak, S.G.A.
,
Mulatu, W.
,
[Sustainability and economic benefits of tsetse control using an insecticide pour-on applied to cattle in Southwest Ethiopia]
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Sustainability and economic benefits of tsetse control using an insecticide pour-on applied to cattle in Southwest Ethiopia