Abstract
A cross-sectional study was carried out from December 2008 to March 2009 in Jawi district of Amhara Regional State northwest Ethiopia to assess the prevalence of bovine trypanosomosis. Blood sample was collected randomly from a total of 300 cattle through piercing of the marginal ear vein to determine the prevalence and measure PCV values for the assessment of anemia. During sampling age, sex and body condition of the animals were recorded to infer risk factors for the occurrence of the disease. The buffy coat technique was em ployed for the detection of trypanosome and to measure PCV values. Thin blood smear was made from positive samples for species identification of the parasite. The prevalence of trypanosomosis was found to be 11.33% (95% CI: 0.08 - 0.15%) in Jawi district of which higher prevalence with species of trypanosome was detected to be for T. congolense (65%) than T. vivax (35%). The prevalence showed no significant difference in susceptibility between sex categories and in age groups. The infection rate between body condition score in parasitaemic and aparasitaemic animals was significantly different (P< 0.05) that poor body conditioned animals were more affected by trypanosomes than good conditioned animals. The mean PCV values in parasitaemic animals was 24.29% +5.58SD while in aparasitaemic animals 27.46% +5.67SD with a statistical significant difference (P
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