Journal
RESEARCH IN VETERINARY SCIENCE
Volume 88, Issue 3, Pages 470-477Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.rvsc.2009.10.010
Keywords
Trypanosomosis; Prevalence; Incidence; PCV; Cattle; Burkina Faso
Categories
Funding
- French Ministry of Foreign and European Affaires
- DSF/IRD
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The present study was conducted to determine the prevalence and incidence of trypanosomosis and to investigate some factors influencing them in an agro-pastoral area of southwestern Burkina Faso. A total of 363 crossbred cattle (Baoule-zebu peul), which were bred under natural trypanosomosis challenge, were monitored monthly for parasitaemia, packed cell volume (PCV) and serological analyses over 2 years. The parasitological prevalence estimated at the beginning of the survey using the buffy coat technique (BCT) was 7.54%. As much as 66.7% of all trypanosome infections were due to Trypanosoma vivax, 23.8% due to Trypanosoma congolense and 9.5% due to T. vivax/T. congolense mixed infections. The monthly serological incidence varied from 0.29% to 19.29%. The season was the most important factor influencing the serological prevalence and incidence and the animal PCV. The dry hot season is associated with increasing seroprevalences and incidences and consequently a decreasing average of PCV. In addition, an important spatial heterogeneity was observed. (C) 2009 Elsevier Ltd. All rights reserved.
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