Abstract:
The study was conducted from November 2009 to March 2010 in Haramaya district, eastern Hararghe zone of
Oromiya region, Ethiopia. The objective of the study was to determine the prevalence of abomasal nematodes of
small ruminants slaughtered at Haramaya municipal abattoir. During the study period a total of 384 abomasums
of small ruminants (181 sheep and 203 goats) were examined. Three genera of nematodes were identified in
both sheep and goats abomasa with overall prevalence of 95.8%. The prevalence in sheep and goats were
94.5% and 97% respectively. The prevalence in both animal species was 85.7% Haemonchus contortus, 82.3%
Trichostrongylus axei and 79.9% Teladorsagia. The specific prevalence observed were 90% for Haemonchus
contortus, 75.7 % for Trichostrongylus axei, and 80.7 % for Teladorsagia spp. in sheep and 81.8 % for
Haemonchus contortus, 88.2 % for Trichostrongylus axei and 79.3 % for Teladorsagia spp. in goats.
Statistically significant differences (P<0.05) in nematode species except Teladorsagia species was observed.
There was no statistically significant differences (P>0.05) among the risk factors of age and sex considered in
relation to the prevalence of abomasal nematodes. Generally, a high infection rate of small ruminants with
abomasal nematodes was observed during the study period.
