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A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa
Dissertation (MSc (Veterinary Science))--University of Pretoria, 2004.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613515646238720 |
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| access_status_str | Open Access |
| author2 | Penzhorn, Barend Louis |
| author_browse | Penzhorn, Barend Louis |
| author_facet | Penzhorn, Barend Louis |
| collection | Thesis |
| dc_rights_str_mv | © 2004, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Veterinary Science))--University of Pretoria, 2004. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/22923 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:22.799Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/22923 A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa Penzhorn, Barend Louis Gummow, Bruce rmemslie@xtra.co.nz Emslie, Forbes Richard No key words available UCTD Dissertation (MSc (Veterinary Science))--University of Pretoria, 2004. Rural subsistence farming practices are the primary agricultural activity in northeastern KwaZulu-Natal, South Africa. Cattle in this area have long been affected by tsetse-borne trypanosome infections. The causative organism, Trypanosoma brucei brucei was first identified by Bruce in the late 1800’s. Approximately 120000 cattle fall within a tsetse (Glossina austeni and Glossina brevipalpis) belt common to Mozambique and South Africa. Between 1991 and 1994 cattle in this area were treated with homidium bromide, and dipped with cyhalothrin, in an attempt to control trypanosomosis. No control measures have been implemented since 1994, however, and trypanosomosis re-emerged as a threat to animal health. In order to determine the optimum control measure available, a longitudinal incidence study was conducted to evaluate three possible control options. Four sentinel herds were selected from populations exposed to similar trypanosome challenges. The baseline trypanosome incidence rate was determined for each herd, after which each herd was subjected to a different trypanosome control measure. Two of the herds were subjected to topical pyrethroid treatment (Cyfluthrin pour-on and Flumethrin plunge-dip) as vector-control measures, one herd was treated 6 weekly with an injectable trypanocidal drug (isometamidium hydrochloride), and one herd served as an untreated control group. Monthly incidence rates were determined using the ‘dark-ground buffy smear technique’. The monthly incidence rates were standardized in order to account for variation in trypanosomosis challenge between the 4 herds. The standardized rates were then compared and the impact of the control strategies was quantified using the Area Under The Curve method. The cost efficacy of each control strategy was evaluated based on a partial budget system. Both the cyfluthrin pour-on and the injectable trypanocide were cost effective and had a dramatic trypanosomosis control effect with the pour-on having the greater impact/ control. The flumethrin plunge-dip displayed moderate trypanosomosis control properties, but proved not to be cost effective. Production Animal Studies unrestricted 2013-09-06T14:00:45Z 2006-03-02 2013-09-06T14:00:45Z 2004-11-19 2007-03-02 2006-03-02 Dissertation Emslie, F 2004, A field evaluation of three trypanosomosis control strategies, in Kwazulu-Natal, South Africa, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/22923 > http://hdl.handle.net/2263/22923 http://upetd.up.ac.za/thesis/available/etd-03022006-132100/ © 2004, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | No key words available UCTD A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title | A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title_full | A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title_fullStr | A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title_full_unstemmed | A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title_short | A field evaluation of three trypanosomosis control strategies, in KwaZulu-Natal, South Africa |
| title_sort | field evaluation of three trypanosomosis control strategies in kwazulu natal south africa |
| topic | No key words available UCTD |
| url | http://hdl.handle.net/2263/22923 http://upetd.up.ac.za/thesis/available/etd-03022006-132100/ |