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Approximately 320 East African Zebu cows over 36 months of age 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. Cows were individually treated with diminazen...


Rowlands, G.J.Woudyalew MulatuNagda, S.M.D'Ieteren, G.D.M.[Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes]Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes

Nine hundred and thirty-six East African Zebu village calves in an area of high trypanosomiasis risk in south-western Ethiopia were monitored monthly with their dams from birth to 3 years of age. Mean packed red cell volume (PCV) and the frequency of detected parasitaemia were calculated for each...


Rowlands, G.J.Mulatu, W.Nagda, S.M.Dolan, R.B.D'Ieteren, G.D.M.[Genetic variation in packed red cell volume and frequency of parasitaemia in East African Zebu cattle exposed to drug-resistant trypanosomes]Genetic variation in packed red cell volume and frequency of parasitaemia in East African Zebu cattle exposed to drug-resistant trypanosomes

In order to assess the effect of tsetse control on livestock productivity, 21 herds of cattle of N'Dama, Baoule and Zebu cross breeds in the region of Boundiali, northern Cote d'Ivoire, were monitored monthly for trypanosome prevalence, packed red cell volume (PCV), body weight and reproductive p...


Rowlands, G.J.D'Ieteren, G.D.M.Coulibaly, L.Hecker, P.A.Leak, S.G.A.Nagda, S.M.[Assessment of the effect of tsetse control on livestock productivity - a case study in northern Cote d'Ivoire]Assessment of the effect of tsetse control on livestock productivity - a case study in northern Cote d'Ivoire

Trypansosome infections in approximately 110,000 tsetse of 12 species or subspecies, at sites in six African countries, were studied over various periods from 1983 to 1994. Infection rates ranged from 0.2 percent in Glossina fuscipes quanzensis Pires at a site in Zaire, to 18 percent in Glossina ...


Leak, S.G.A.Rowlands, G.J.[The dynamics of trypanosome infections in natural populations of tsetse (Diptera: Glossinidae) studied using wing-fray and ovarian ageing techniques]The dynamics of trypanosome infections in natural populations of tsetse (Diptera: Glossinidae) studied using wing-fray and ovarian ageing techniques

Reports results of a study on the relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible breeds of cattle. Presents data on tsetse challenge and trypanosome prevalence in N'Dama and Zebu cattle in Zaire, Gabon, Ethiopia and Cote d'Ivoire.


Leak, S.G.A.Colardelle, C.Coulibaly, L.Dumont, P.Feron, A.Hecker, P.D'Ieteren, G.D.M.Jeannin, P.Minengu, M.Minja, S.Mulatu, W.Nankodaba, G.Ordner, G.Rowlands, G.J.Sauveroche, B.Tikubet, G.Trail, J.C.M.[Relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible cattle]Relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible cattle

Methods for determining the efficacy of animal health interventions involving vector-borne diseases when the intervention attempts to control the vector itself are described. There are a number of possibilities. For example, a before/after study can be undertaken when data collected following the...


Rowlands, G.J.[Statistical issues in the design and analysis of animal health interventions for vector-borne disease]Statistical issues in the design and analysis of animal health interventions for vector-borne disease

In this study, the efficacies of three trypanocidal drugs, diminazene aceturate, isometamidium chloride and homidium bromide, were evaluated in four representative areas of Cote d'Ivoire with different production systems, degree of integration of different trypanosomosis control approaches and de...


D'Ieteren, G.D.M.Coulibaly, L.Atse, P.A.Hecker, P.A.Krebs, H.A.Rowlands, G.J.Leak, S.G.A.Nagda, S.M.[Trypanocidal drug resistance in West Africa]Trypanocidal drug resistance in West Africa

In this study, widespread resistance of T. congolense infections in East Highland Zebu cattle at Ghibe, southwest Ethiopia, to all available trypanocidal drugs has been demonstrated. Changes in incidence of T. congolense infections in cattle 36 months and more of age sampled between 1994 and 1997...


Rowlands, G.J.[Detecting resistance of trypanosomal infection to diminazene aceturate - a possible field test?]Detecting resistance of trypanosomal infection to diminazene aceturate - a possible field test?

Eleven groups of male cattle (39 on average per group) were monitored for presence of trypanosomes at 3-weekly intervals for periods of up to 27 weeks at a feedlot of Ferkessedougou, northern Cote d'Ivoire, in an area supposedly free of tsetse. All animals originated from or grazed during transhu...


Atse, P.A.Coulibaly, L.Hecker, P.A.Krebs, H.A.D'Ieteren, G.D.M.Rowlands, G.J.Leak, S.G.A.Nagda, S.M.[Evidence for trypanocidal drug resistance at Ferkessedougou feedlot, northern Cote d'Ivoire]Evidence for trypanocidal drug resistance at Ferkessedougou feedlot, northern Cote d'Ivoire

Twelve traditional herds of cattle in the area of Boundiali, northern Cote d'Ivoire, were examined monthly from 1990 to 1992 for the presence of trypanosomes. The herds were randomised into 3 treatment groups, cattle in 4 herds received diminazene aceturate at 3.5 or 7 mg/kg body weight (b.w.) wh...


Coulibaly, L.Hecker, P.A.Krebs, H.A.Rowlands, G.J.D'Ieteren, G.D.M.Leak, S.G.A.Peregrine, A.S.Nagda, S.M.[Failure of trypanocidal drugs to cure trypanosome infections in cattle in Boundiali District, northern Cote d'Ivoire]Failure of trypanocidal drugs to cure trypanosome infections in cattle in Boundiali District, northern Cote d'Ivoire

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