Epidemiology of Haemonchus contortus infection in goats in Sikkim

Out of 3,821 faecal samples examined 63.18% were positive with a mean egg per gram (epg) of 1,150.22. Highest prevalence was observed in August (83.22%). Examination of abomasums of slaughtered goats (107) showed 61.68% incidence of Haemonchus contortus infection with worm count in the range of 41.26– 377.22. The female/male ratio was 1.639. The infection was more prevalent in animals below 1 year (68.34%) followed by 1– 2 year (64.99%) while those above two years of age showed only 57.71% prevalence. Moreover, the prevalence was more in autumn (74.73%) and summer (73.12%) compared with spring and winter.