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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
veterinary
Molecular survey of pathogenic trypanosomes in naturally infected Nigerian cattle
Research in Veterinary Science, Volume 94, No. 3, Year 2013
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Description
Microscopy and polymerase chain reaction (PCR) were used to survey pathogenic trypanosome infection in naturally infected Nigerian cattle. In 411 animals sampled, microscopy detected 15.1% positive infection of at least one of Trypanosoma brucei, Trypanosoma congolense or Trypanosoma vivax, while PCR detected 63.7% positive infections of at least one of those species and Trypanosoma evansi. PCR detected 4.4%, 48.7%, 26.0% and 0.5% respectively of T. brucei, T. congolense, T. vivax and T. evansi infections. All of the T. congolense detected were savannah-type, except for two forest-type infections. Prevalence of mixed infections was 13.9%, being primarily co-infection by T. congolense and T. vivax while prevalence of mixed infections by T. evansi, T. vivax and T. congolense was 1.5%. Microscopy showed poor sensitivity but specificity greater than 94%. Infection rates were much higher in Southern than in Northern Nigeria. Infections were lowest in N'dama compared to Muturu, Sokoto Gudali and White Fulani breeds. Animals with T. vivax monoinfection and mixed infections showed significantly lower packed cell volume (PCV) values. Those infected with any Trypanosoma species with <200 parasites/μl showed higher PCV values than those infected with >200 parasites/μl. The new finding of savannah- and forest- type T. congolense in Nigeria and the relatively high abundance of mixed infections are of significant clinical relevance. This study also suggests that T. congolense is the most prevalent species in Nigeria. © 2012 Elsevier Ltd.
Authors & Co-Authors
Takeet, Michael Irewole
United States, Ithaca
Cornell University
Nigeria, Ibadan
University of Ibadan
Nigeria, Abeokuta
Federal University of Agriculture, Abeokuta
Fagbemi, Benjamin Olakunle
Nigeria, Ibadan
University of Ibadan
De Donato-Capote, Marcos
United States, Ithaca
Cornell University
Venezuela, Cumana
Universidad de Oriente - Venezuela
Yakubu, Abdulmojeed
United States, Ithaca
Cornell University
Nigeria, Keffi
Nasarawa State University
Rodulfo, Hectorina E.
Venezuela, Cumana
Universidad de Oriente - Venezuela
Peters, Sunday Olusola
United States, Ithaca
Cornell University
United States, Mount Berry
Berry College
Wheto, Mathew Y.
United States, Mount Berry
Berry College
Imumorin, Ikhide G.
United States, Ithaca
Cornell University
Statistics
Citations: 54
Authors: 8
Affiliations: 6
Identifiers
Doi:
10.1016/j.rvsc.2012.10.018
ISSN:
00345288
e-ISSN:
15322661
Study Design
Cross Sectional Study
Study Approach
Quantitative
Study Locations
Nigeria