Prevalence and Associated Risk Factors of Bovine Trypanosomosis in Nono District, West Shewa Zone, Ethiopia

Abstract

Trypanosomosis is a major constraint to livestock production due to the challenge of vector control activities and drug resistance development in Sub-Saharan Africa particularly Ethiopia. The most common trypanosome species that affects cattle in Ethiopia are T. congolense. T. vivax and T. brucei. Therefore, A cross sectional study was conducted from November 2019 to December 2020 to determine the prevalence of bovine trypanosomosis Nono district of Western Shewa zone, Ethiopia. The study district was purposively selected and PAs were randomly selected to take sample for the study. For the prevalence study, dark phase contrast buffy coat examination and Giemsa stained thin blood smears were used and Chi- Square test was used to analysis the results. Out of a total of 384 randomly selected and examined cattle, an overall prevalence of 5.5% was recorded. Highest prevalence was recorded in Nano Halo 8(6.7%) followed by Biftu Jalala 6(5.5%) and Halo Dinki 7(4.5%) peasant associations. This study showed no significant difference (P>0.05) in trypanosomiasis infection rate among peasant associations and there was significant association between risk factors like age(X2= 6.97, P= 0.008), sex (X2= 5.38, P= 0.02), body condition (X2 = 6.09, P= 0.048) and PCV values (X2= 18.47, P= 0.000) of examined cattle. Out of species of trypanosome identified highest was T. Congolense was 13(61.91%), followed by T. Vivax was 7(33.33%) and 1(4.76%) were mixed. The present work evidenced that tsetse and trypanosomosis has continued to pose a considerable threat to cattle of the study area warranting an integrated control to safeguard cattle production and productivity.