A Study on Prevalence and Pathological Effects of Intestinal Helminths in Black Bengal Goat in Chittagong

Abstract

Prevalence and pathological effects of intestinal helminths in Black Bengal goats were studied by examining 150 viscera collecting from three (3) slaughter houses of Chittagong district during raining and winter season over a period of 6 months .94.67% goats were infected with intestinal helminths. Species of helminth parasites identified included Oesophagostomum columbianum (92%), Trchuris ovis (56.66%), Moniezia spp (11.33%). Prevalence of intestinal helminth was significantly higher in winter (100%) than that in rainy (89.33%). Calculated odds ratio between winter and rainy was 18, which indicated that Black Bengal goats were 18 times more susceptible to helminth infection in winter. Pathological lesions were observed in case of O. columbianum, T. ovis and Moniezia spp. infection. In O. columbianum infection hard, raised, slightly yellowish to greenish coloured nodules were observed. Microscopically it was characterized by catarrhal inflammation associated with destruction and desquamation of epithelial cells. But moderate infection with T. ovis was characterized by catarrhal inflammation along with the petechial haemorrhages on the intestinal mucosa where parasites were firmly attached. The study clearly suggests that Black Bengal goats are susceptible to intestinal helminths in both winter and summer seasons and most of the parasites recovered were associated with the production of variable degree of pathological lesions.