Abstract:
African Animal Trypanosomosis is the major constraint of livestock production in tsetse infested
areas of Ethiopia and is the major challenge in Dawuro zone. However, there is shortage of
information on general situations and impacts of control methods. A cross-sectional study was
conducted from November, 2017 to June, 2018 in the area with the aims of assessing the
prevalence and risk factors of ruminants` trypanosomosis, apparent density of tsetse and impacts
of the control interventions. The study was conducted in the areas with the history of application
of tsetse control interventions.The hematological and parasitological techniques, trap
deployment,questionnaire study were conducted. Blood sample was collected from themarginal
ear vein of 302 cattle, 126 sheep and 103 goats and tested at Tarcha Veterinary Laboratory. The
data was analyzed using binary logistic regression. The findings of this study showed the overall
prevalence of 15.6% (95%CI: 12.5%-18.7%) and the prevalence of 23.8% (95%CI: 19%-
29.6%), 4% (6%-7.4%) and 5.8% (1.3%-10.3%) in cattle, sheep and goats respectively. Therisk
factors such asage (P-value = 0.01,OR = 3.3),coat color (OR = 2.6, P-value = 0.009), body
conditions (P-value = 0.008,OR = 0.36) and forest coverage (P-value = 0.004, OR = 0.3) in
bovine and age (P-value = 0.03, OR = 0.03),coat color (P-value = 0.005, OR = 0.17), body
conditions (P-value = 0.005, OR = 0.07) and forest coverage (P-value= 0.04,OR = 0.2) in shoats
were showed statistically significant association the prevalence of trypanosomosis.The apparent
density of tsetse and Stomoxys were 5.37f/t/d and 0.39f/t/d respectively. The overall mean
prevalence and vector density of pre-intervention were 4.50+7.44SD and 0.17+0.38SD
while post intervention was 10.83+11.63SD and 5.50+0.51SD respectively. There is control
continuouscontrol interventions applied in the area but the results show that the disease
prevalence and apparent density were increasing. Therefore, comprehensive national wise
evaluation of the impacts of control interventions applied to the disease so far is better to be taken.
