Epidemiologic and histopathological investigation of inclusion body hepatitis (IBH) in liver lesions of boiler chickens in Sanandaj slaughterhouse

Adenoviruses belonging to group I in poultry (FAdV) cause essential diseases and are divided into five types from A to E. The strains of types D and E can cause severe damage to the liver tissue and cause a condition known as inclusion body hepatic (IBH). In recent years, outbreaks of IBH disease have been reported in different geographic regions, emphasizing the spread of the disease worldwide. The outbreak of IBH causes severe economic consequences, including poor performance and increased herd mortality. In this study, livers with lesions were sampled at two time intervals and transferred to the pathology laboratory for histopathological tests to investigate contamination in broiler poultry in poultry farms around Sanandaj city. Tissue samples were fixed in Buen's fixative solution. Sections were prepared from fixed tissues and stained with hematoxylin-eosin dye. Our research showed that according to the observation of eosinophilic inclusions inside the nucleus (as a pathognomic sign), the outbreak of IBH in broiler flocks slaughtered was 54.66%. The present study determined the IBH disease by examining the microscopic lesions in the liver of several killed chickens in the Sanandaj slaughterhouse.