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Discusses trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding in Africa. Looks into methods available for control including tsetse control, drugs & vaccination and discusses constraints that limit the control. Also discusses prospects for future contr...


Murray, M.Trail, J.C.M.D'Ieteren, G.D.M.[Trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding]Trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding

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

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.Swallow, B.M.Rowlands, G.J.Mulatu, W.D'Ieteren, G.D.M.[The economics of village cattle production in a tsetse infested area of southwest Ethiopia]The economics of village cattle production in a tsetse infested area of southwest Ethiopia

Trypanosomosis is one of the major constraints on animal production in areas of Africa which have the greatest potential for significant increases in domestic livestock populations and livestock productivity. While the eradication of trypanosomosis from the entire continent is an unrealistic goal...


D'Ieteren, G.D.M.Authié, E.Wissocq, N.M.Murray, M.[Trypanotolerance, an option for sustainable livestock production in areas at risk from trypanosomiasis]Trypanotolerance, an option for sustainable livestock production in areas at risk from trypanosomiasis

A study undertaken to evaluate the degree of genetic determination in the control of development of anaemia in N'Dama post-weaner cattle exposed to a medium natural trypanosome challenge during a short term test for trypanotolerance. The heritabilities of average pcv, lowest pcv reached, and grow...


Trail, J.C.M.D'Ieteren, G.D.M.Maille, J.C.Yangari, G.[Genetic aspects of control of anaemia development in trypanotolerant N'Dama cattle]Genetic aspects of control of anaemia development in trypanotolerant N'Dama cattle

Evaluates components of a short term test for trypanotolerance criteria in N'Dama post-weaners exposed to a medium natural trypanosome challenge in Gabon; compares the effectiveness of different measures of control of development of anaemia; and measures the post-test recovery of packed red cell ...


Trail, J.C.M.D'Ieteren, G.D.M.Colardelle, C.Maille, J.C.Ordner, G.Sauveroche, B.Yangari, G.[Evaluation of a field test for trypanotolerance in young N'Dama cattle]Evaluation of a field test for trypanotolerance in young N'Dama cattle

A method is described for calculating new infection incidence from monthly field data collected between April 1994 and February 1998 from an average of 770 Ethiopian Highland Zebu cattle maintained under traditional management in the Ghibe valley, southwest Ethiopia and exposed to a high challeng...


Rowlands, G.J.Leak, S.G.A.Peregrine, A.S.Nagda, S.M.Mulatu, W.D'Ieteren, G.D.M.[The incidence of new and the prevalence and persistence of recurrent trypanosome infections in cattle in southewest Ethiopia exposed to a high challenge with drug-resistant parasites]The incidence of new and the prevalence and persistence of recurrent trypanosome infections in cattle in southewest Ethiopia exposed to a high challenge with drug-resistant parasites

Presents results of a study undertaken firstly to measure the relative effects in N'Dama cattle of length of time detected parasitaemic; intensity of parasitaemia; and control of development of anaemia; on reproductive performance (calving interval), maternal ability (calf weaning weight) and cow...


Trail, J.C.M.D'Ieteren, G.D.M.Feron, A.Kakiese, O.Mulungo, M.Pelo, M.[Effect of trypanosome infection, control of parasitaemia and control of anaemia development on productivity of N'Dama cattle]Effect of trypanosome infection, control of parasitaemia and control of anaemia development on productivity of N'Dama cattle

Trypanosome infection was detected by the dark ground/phase contrast buffy coat microscopic technique in N'Dama cattle in a high natural tsetse challenge situation in Zaire. The data were used to compare the pattern of infection in very young animals and in their dams, and to evaluate how the pat...


Trail, J.C.M.Wissocq, N.M.D'Ieteren, G.D.M.Kakiese, O.Murray, M.[Patterns of Trypanosoma vivax and T. Congolense infection differ in young N'Dama cattle and their dams]Patterns of Trypanosoma vivax and T. Congolense infection differ in young N'Dama cattle and their dams

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.Mulatu, W.Authié, E.D'Ieteren, G.D.M.Leak, S.G.A.Nagda, S.M.[Effects of trypanosomiasis on reproduction of East African Zebu cows exposed to drug-resistant trypanosomes]Effects of trypanosomiasis on reproduction of East African Zebu cows exposed to drug-resistant trypanosomes

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