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Discusses the genetic aspects of criteria of trypanotolerance including parasitaemia, anaemia control and immune response. Includes data on heritability estimates for daily liveweight change, for PCV under low & high trypanosome prevalence, and for number of treatments required in four periods af...


Trail, J.C.M.D'Ieteren, G.D.M.Feron, A.Itty, P.Kakiese, O.Maehl, J.H.H.Mulungo, M.Nagda, S.M.Paling, R.W.Pelo, M.Rarieya, J.M.Thorpe, W.R.[Genetic aspects of criteria of trypanotolerance]Genetic aspects of criteria of trypanotolerance

Presents field research on measurement and use of trypanotolerance criteria to enhance trypanotolerant livestock productivity. Reviews approach and steps taken from the early years to the most recent ongoing or planned experiments carried out by ILCA and its partneres in the African Trypanotolera...


D'Ieteren, G.D.M.Trail, J.C.M.[Field research on measurement and use of trypanotolerance criteria to enhance trypanotolerant livestock productivity. 1. ILCA's achievements and future plans]Field research on measurement and use of trypanotolerance criteria to enhance trypanotolerant livestock productivity. 1. ILCA's achievements and future plans

Factors affecting the expression of trypanotolerance are discussed. Some of the factors which could influence the feeding preference of tsetse are physical - skin thickness, skin rippling; visual - coat colour, size; olfactory - breath, urine, skin secretions; behaviour - tail flicking, head swin...


Leak, S.G.A.D'Ieteren, G.D.M.Rowlands, G.J.[Factors affecting estimation of tsetse challenge and the expression of trypanotolerance]Factors affecting estimation of tsetse challenge and the expression of trypanotolerance

A six year data at Mushie Ranch, Zaire was collected and analysed to quantify the relative importance of four trypanotolerance indicators (ability to control the length of time detected parasitaemic, the ability to control the intensity of parasitaemia, the ability to resist the development of se...


Trail, J.C.M.Wissocq, N.M.D'Ieteren, G.D.M.[Field research on measurement and use of trypanotolerance criteria to enhance trypanotolerant livestock productivity. 2. Recent results quantifying trypanotolerance indicators]Field research on measurement and use of trypanotolerance criteria to enhance trypanotolerant livestock productivity. 2. Recent results quantifying trypanotolerance indicators

A deltamethrin `pour-on' insecticide was applied monthly to over 2000 cattle exposed to a high challenge of drug-resistant trypanosomes and high tsetse re-invasion pressure in the Ghibe valley, south-west Ethiopia. Blood samples were taken monthly from an average of 760 cattle for determination o...


Rowlands, G.J.Leak, S.G.A.Mulatu, W.Nagda, S.M.Wilson, A.D'Ieteren, G.D.M.[Use of deltamethrin 'pour on' insecticide for the control of cattle trypanosomiasis in the prescence of high tsetse invasion]Use of deltamethrin 'pour on' insecticide for the control of cattle trypanosomiasis in the prescence of high tsetse invasion
D'Ieteren, G.D.M.Awuome, K.Bokovi, K.Chema, S.Colardelle, C.Coulibaly, L.Defly, A.Feron, A.Grundler, G.Handlos, MichaelHecker, P.Itty, P.Kakiese, O.Leak, S.G.A.Maehl, J.H.H.Maloo, S.H.Mawuena, K.Minengu, M.Morkramer, G.Mukendi, F.Mulatu, W.Mulungo, M.Nagda, S.M.Nankodaba, G.Ngamuna, S.Ordner, G.Paling, R.W.Rarieya, J.M.Trail, J.C.M.Yangari, G.Schuetterle, A.Sheria, M.Thorpe, W.R.Tikubet, G.[Trypanosome infections and other factors influencing PCV in livestock]Trypanosome infections and other factors influencing PCV in livestock

Matching animal health and performance data were recorded over the 2 year period from weaning at 10 months of age on 225 N'Dama cattle in a high natural tsetse challenge situation in Zaire. Four parameters that are regarded as possible indicators of trypanotolerance, species of trypanosomes detec...


Trail, J.C.M.Wissocq, N.M.D'Ieteren, G.D.M.Kakiese, O.Murray, M.[Quantitative phenotyping of N'Dama cattle for aspects of trypanotolerance under field tsetse challenge]Quantitative phenotyping of N'Dama cattle for aspects of trypanotolerance under field tsetse challenge

Evaluates in detail how environmental and stress factorts affect trypanosome infection in N'Dama cows and their calves, the linkages with curative drug treatment given under the management regime prevailing, the linkages with anaemia control as measured by packed red cell volume (PCV), and the re...


Trail, J.C.M.D'Ieteren, G.D.M.Murray, M.Ordner, G.Yangari, G.Collardelle, C.Sauveroche, B.Maille, J.C.Viviani, P.[Measurement of trypanotolerance criteria and their effect on reproductive performance of N'Dama cattle]Measurement of trypanotolerance criteria and their effect on reproductive performance of N'Dama cattle

Describes the epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia, the tsetse populations and their relationships to the prevalence of trypanosome infections in cattle. The tsetse challenge to cattle at two sites in the area was estimated as the product of tsetse relati...


Leak, S.G.A.Mulatu, W.Authié, E.D'Ieteren, G.D.M.Peregrine, A.S.Rowlands, G.J.Trail, J.C.M.[Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 1. Tsetse challenge and its relationship to trypanosome prevalence in cattle]Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 1. Tsetse challenge and its relationship to trypanosome prevalence in cattle

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