Abstract:
A cross-sectional study was carried out from November 2014 to March 2015 to determine the
prevalence of Dictyocaulus arnfieldi and to identify associated risk factors in equines in Sudie district,
south eastern Ethiopia. A total of 384 faecal samples were collected randomly from horses (n = 128),
donkeys (n = 217) and mules (n = 39) for coprological examination. Isolation of D. arnfieldi was
performed using a modified Baermann technique. The overall prevalence of D. arnfieldi was 164 (42.7%)
with infection rates of 22.7, 57.6 and 22.7% in horses, donkeys and mules, respectively, with statistically
significant (P<0.05) variation. High prevalence of lungworm infection was recorded in the age group of
≤4 years (50.9%) followed by the age group of 4-10 years (42.3%) and ≥10 years (40.46%), however,
statistically non significant. Observed prevalence of lungworms in female equines was 37.1% and in
males was 47.0% with no statistically significant difference (P>0.05). In this study, animals with poor
body conditions were found to be highly infested (50.9%) compared to medium (41.6%) and good body
conditions (21.3%) with statistically significant difference (P<0.05). The prevalence in non-dewormed
equines was 53.2% and dewormed equines were 26.2% with significant difference (P<0.05). From this
study, it can be concluded that body condition can be considered as one of the important factors which
influence the occurrence of lung worm parasite in equines. It is recommended that owners should be
trained to improve the management system, especially in terms of the level of nutrition so that the
animal can have good body condition that confers some level of resistance against lung worm
infection. In addition, strategic deworming should be implemented using broad spectrum anthelmintic
drugs in the study area
