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.
,
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 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 Mulatu
,
Nagda, 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]
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Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes
The introduction of web based mapping facilities that use satellite imagery, offers local people the possibility to map their environment. However, maps need to be accurate, which is the reason why map making is assigned to professionals. In this paper, we investigated the classification accuracy...
Leeuw, Jan de
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Said, Mohammed Yahya
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Ortegah, L.
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Nagda, S.M.
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Georgiadou, Y.
,
DeBlois, M.
,
[An assessment of the accuracy of volunteered road map production in Western Kenya]
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An assessment of the accuracy of volunteered road map production in Western Kenya
The pick-up rates of tick species by various resistant groups of animals, dipped once a month and not dipped were investigated under ranch conditions in Nabiswera, Luwero district, Uganda. During the first three weeks of exposure of cattle to natural tick infestation, two phases of tick build-up ...
Okello-Onen, J.
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Tukahirwa, E.M.
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Pery, B.D.
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Rowlands, G.J.
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Nagda, S.M.
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Musisi, G.
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Bode, E.
,
Heinonen, R.
,
Mwayi, W.
,
Opuda-Asibo, J.
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[The effects of host resistance on the pick-up rates of ticks under natural infestation in Uganda]
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The effects of host resistance on the pick-up rates of ticks under natural infestation in Uganda
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.
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Tukahirwa, E.M.
,
Perry, Brian D.
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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]
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Population dynamics of ticks on indigenous cattle in a pastoral dry to semi-arid rangeland zone of Uganda
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
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.
,
Schaik, G. van
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McDermott, John J.
,
Rowlands, G.J.
,
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
Microsatellite markers are commonly used for population genetic analyses of livestock. However, up to now, combinations of microsatellite data sets or Microsatellite markers are commonly used for population genetic analyses of livestock. However, up to now, combinations of microsatellite data set...
Freeman, A.R.
,
Bradley, D.G.
,
Nagda, S.M.
,
Gibson, John P.
,
Hanotte, Olivier H.
,
[Combination of multiple microsatellite data sets to investigate genetic diversity and admixture of domestic cattle]
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Combination of multiple microsatellite data sets to investigate genetic diversity and admixture of domestic cattle
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
A comparison of F2 and F6/7 inter-cross lines of mice, derived from CBA and SWR parental strains, has provided strong evidence for several previously undetected quantitative trait loci (QTL) for resistance to Heligmosomoides bakeri. Five QTL affecting average faecal egg counts and/or worm burdens...
Behnke, J.M.
,
Menge, D.M.
,
Nagda, S.M.
,
Noyes, H.
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Iraqi, F.A.
,
Kemp, Stephen J.
,
Mugambi, R.J.M.
,
Baker, R.L.
,
Wakelin, D.
,
Gibson, John P.
,
[Quantitative trait loci for resistance to Heligmosomoides bakeri and associated immunological and pathological traits in mice: comparison of loci on chromosomes 5, 8 and 11 in F2 and F6/7 inter-cross lines of mice]
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Quantitative trait loci for resistance to Heligmosomoides bakeri and associated immunological and pathological traits in mice: comparison of loci on chromosomes 5, 8 and 11 in F2 and F6/7 inter-cross lines of mice