The study was conducted from November 2011 to April 2012. Two hundred twenty two sheep and 174
goats’ abomasum were examined according to the standard procedures. The overall prevalence of
abomasal nematode was 82% for sheep and 76.4% for goats. The parasitic species specific prevalence
was 80.6, 25.7, and 14.8% for Haemonchus species, Trichostrongylus axei and Teladorsagia
circumcincta, respectively in sheep and 75.2, 9.8, 14.2% in goats. Sex related prevalence for sheep was
79.6, 25.7, 17.1% in male and 81.9, 25.5, and 11.7% in female for Haemonchus species, Trichostrongylus
axei and Teladorsagia circumcinecta respectively. The sex related prevalence in goats was 71.9, 5.7,
6.1% and 81.6, 21.6, 16.6% for Haemonchus species, Trichostrongylus axei and Teladorsagia
circumcinecta, respectively for male and female. The overall mean worm count was 7459.4 for sheep
and 6244.9 for goats. The sex related mean worm burden was significantly higher (P<0.05) in female
than male for both sheep and goats. Female Haemonchus species Vulvar morphology was
characterized and linguiform vulvar morphology was the most and knobbed type vulva morphology was
the least frequently identified vulvar type both from sheep and goats’ worms with higher proportions of
linguiform vulva from goats than sheep. It was concluded that the variation in prevalence and vulvar
morphotype was almost similar with little deviations between sheep and goats. So importance of role
of sheep to goats or goats to sheep as reservoir should be assessed. Investigations using advanced
molecular techniques should be carried on genetic diversity and pathogenecity of Haemonchus in
special as drug resistance is another emerging challenge in addition to the economic loss.