Pathological investigation of liver fluke infection of slaughtered goat in Sylhet

Abstract

ABSTRACT

The aim of the study was to investigate the pathological effect of liver fluke in Black Bengal goats in Sylhet region. A total of 325 Black Bengal goat livers were examined, of which 70 livers were found infected with Fasciola gigantica. The common histopathological changes found in this study were the migratory tract with lymphocytic infiltration, atrophy, necrosis and fatty changes in the liver. In summer (March June) 106 liver samples were collected and examined of which 20 (18.87%) were Fasciola gigantica positive. The highest prevalence rate of infection (25.66%) was found in rainy season (July October) where 29 liver samples out of 113 were found infected. In winter (November - February) 2) (19.81%) were found positive out of 106 liver samples examined. The study revealed that age of the animal has significant effect on Fascioliasis in goats. Significantly (P<0.01) highest infection rate was found in 2-2.5 years old animals (50%). Like age group, sex of the animal was also found as important determinants for Fascioliasts. In this study out of 219 male gout livers 30 (13.70%) were infected with Fasciola. On the other hand, out of 106 female goat livers, 40 (37.73%) were found positive with Fascioliasis. The data of origin of animals also collected which was not statistically significant.