Study on the Prevalence of Major Trypanosomes Affecting Bovine in Tsetse Infested Asosa District of Benishangul Gumuz Regional State, Western Ethiopia

摘要

The study was conducted in Asosa district of Benishangul Gumuz Regional State to determine theprevalence and identify different species of trypanosomes affecting cattle in the area known to be infested withtsetse flies. From a total of 384 randomly selected and examined cattle in six of the study area, 108 (28.1%) werepositive. The prevalence was significantly higher (P<0.05) in older and poor body conditioned animals butdidn’t vary between sexes and peasant associations. The most common trypanosome species identified wereT. congolense (72/108, 66.7%) followed by mixed T. vivax and T. congolense (21/108, 19.4%), T. vivax(10/108, 9.3%) and T. brucei (5/108, 4.6%). The proportional prevalence of T. congolense is significantly higher(P=0.000) than the other trypanosome species. The mean PCV values recorded were 20.6% in parasitaemic and25% in aparasitaemic animals with a statistical significant difference (P<0.05). The notorious impact of bovinetrypanosomosis on cattle productivity and the recorded high prevalence of the disease in the area with morepathogenic T. congolense as the dominant species validate the need for application of integrated controlutilizing insecticide pour-on, odor-baited and insecticide impregnated targets and traps kindred with curativeand prophylactic treatments of livestock with trypanocidal drugs.