As part of a series of studies associated with the development of improved vaccines for heartwater (a tick-borne disease of ruminant livestock caused by Cowdria ruminantium), field surveys were carried out to assess losses associated with the disease and the costs associated with controlling it i...
Chamboko, Tafireyi
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Mukhebi, A.W.
,
Callaghan, C.J.O.
,
Peter, T.F.
,
Kruska, R.L.
,
Medley, G.F.
,
Mahan, S.M.
,
Perry, Brian D.
,
[The control of heartwater on large-scale commercial and smallholder farms in Zimbabwe]
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The control of heartwater on large-scale commercial and smallholder farms in Zimbabwe
Heartwater, caused by the rickettsial organism Cowdria ruminantium, is a serious constraint to livestock development in much of sub-Saharan Africa. Traditionally, the disease has been controlled by the use of chemical acaricides to control the vector tick. The University of Florida/USAID-supporte...
Mukhebi, A.W.
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Chamboko, Tafireyi
,
O'Callaghan, C.J.
,
Peter, T.F.
,
Kruska, R.L.
,
Medley, G.F.
,
Mahan, S.M.
,
Perry, Brian D.
,
[An assessment of the economic impact of heartwater (Cowdria ruminantium infection) and its control in Zimbabwe]
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An assessment of the economic impact of heartwater (Cowdria ruminantium infection) and its control in Zimbabwe
The authors highlight the reliance on repeated natural infections by tickborne pathogens to maintain immunity in immunized herds. That incidence of clinical heartwater in cattle, caused by Cowdria ruminantium, is low while intensive acaricide use interrupts transmission of pathogens. Evidence is ...
Perry, Brian D.
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Chamboko, Tafireyi
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Mahan, S.M.
,
Medley, G.F.
,
Minjauw, B.
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O'Callaghan, C.J.
,
Peter, T.F.
,
[The economics of integrated tick and tick-borne disease control on commercial farms in Zimbabwe]
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The economics of integrated tick and tick-borne disease control on commercial farms in Zimbabwe
Seventy 1- to 4-year old female indigenous goats were matched and randomised into two groups to measure the effects of naturally acquired trypanosome infections on oestrus and conception. All goats were treated twice with diminazene aceturate (Berenil) at 7 mg/kg body weight at two-week intervals...
Perry, Brian D.
,
Chamboko, Tafireyi
,
Mahan, S.
,
Medley, G.F.
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Peter, T.F.
,
[A study of the effects of trypanosome infection on the fertility of female goats in Lulangwa Valley, eastern Zambia]
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A study of the effects of trypanosome infection on the fertility of female goats in Lulangwa Valley, eastern Zambia
Heartwater, a disease of ruminants caused by the rickettsia Cowdria ruminantium and transmitted by ticks of the genus Amblyomma, is a significant cause of productivity losses in cattle, sheep and goats in most of sub-Saharan Africa. In southern Africa, the vector of C. ruminantium is A. hebraeum....
Perry, Brian D.
,
Chamboko, Tafireyi
,
Mahan, S.
,
Medley, G.F.
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Peter, T.F.
,
[A study of the effects of heartwater and its control on livestock productivity and economics in Zimbabwe]
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A study of the effects of heartwater and its control on livestock productivity and economics in Zimbabwe
In order to assess the economic impact of heartwater (Cowdria ruminantium infection) and model the impact of improved vaccines against the disease, a field study was conducted to provide data on livestock productivity indicators in Zimbabwe. Cross-sectional studies were performed in the two main ...
Chamboko, Tafireyi
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Peter, T.F.
,
Kruska, R.L.
,
Medley, G.F.
,
Mahan, S.M.
,
Perry, Brian D.
,
[Heartwater and the economics of livestock production on large scale commercial and smallholder farms in Zimbabwe]
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Heartwater and the economics of livestock production on large scale commercial and smallholder farms in Zimbabwe
Perry, Brian D.
,
Peter, T.F.
,
Chamboko, Tafireyi
,
Mahan, S.M.
,
Medley, G.F.
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Minjauw, B.
,
[Studies on the epidemiology and economic impact of heartwater in Zimbabwe]
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Studies on the epidemiology and economic impact of heartwater in Zimbabwe
Chamboko, Tafireyi
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Peter, T.F.
,
Kruska, R.L.
,
Medley, G.F.
,
Mahan, S.M.
,
Perry, Brian D.
,
[Economic impact of heartwater and its control in Zimbabwe]
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Economic impact of heartwater and its control in Zimbabwe
Vera, Raúl R.
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Chamboko, Tafireyi
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[Comparación de tres sistemas de producción de forraje para engorde de novillos]
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Comparación de tres sistemas de producción de forraje para engorde de novillos
This study commissioned by CTA aims to identify agricultural information needs of key actors / beneficiaries for CTA products and services, potential actors ..and, to develop some baseline data to facilitate subsequent monitoring activities.
Chamboko, Tafireyi
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[Assessment of Agricultural information needs in African, Caribbean & Pacific (ACP) States: Country Study: Zimbabwe]
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Assessment of Agricultural information needs in African, Caribbean & Pacific (ACP) States: Country Study: Zimbabwe