Vol. 8, Issue 6, Part D (2023)

Author(s): U Naseema, CTA Kumar and R Saahithya

Abstract: The present study described the case report of HPS in 5-week-old chick, which was presented for necropsy to the Department of Veterinary Pathology, Veterinary College and Research Institute, Salem. Grossly, the heart lesion showed hydropericardium, i.e., Accumulation of clear straw coloured, jelly like fluid in the pericardial sac, with the quantity of fluid ranging from 3-5 mL which gives a flabby appearance to the heart and liver lesions included, pale and swollen liver with numerous focal necrotic areas. The histopathological lesions in the liver showed diffused areas of coagulative necrosis and mononuclear cells infiltrations. Some hepatocytes showed cell swelling, partial clearing of cytoplasm and shrunken cells with pyknotic nuclei. The characteristic histopathological lesion in the liver was identified with the presence of intranuclear inclusion bodies in the hepatocytes and surround by clear halo, or as a filling in the entire nucleus. Based on the gross and characteristic microscopic findings, the HPS was diagnosed in chick. This is the first case report on HPS in Salem district of Tamil Nadu.