368/19 | General Article | Poultry Science

Avian Encephalomyelitis Associated Corneal Opacity in Commercial Layer Chicken

R.Madheswaran, G.A.Balasubramaniam, P.Srinivasan, K.Sukumar and S.Kathirvel

Department of Veterinary Pathology, Veterinary College and Research Institute, TANUVAS, Namakkal - 637 002. Tamil Nadu

Published in the Indian Veterinary Journal March 2020: 97 (3) - pages 34 to 36
(Received: October, 2019, Accepted: November, 2019)


The corneal opacity was observed in 20 out of 50birds of  ve different  ocksaffected with avian encephalomyelitis. Birds showed signs like opaci cation of cornea, tremor, leg weakness, reduced feed and water intake, drop in egg production and death. Twenty two out of 50serum samples showed increased antibody titres for avian encephalomyelitis virus.The affected birds did not show any gross lesions at necropsy. Microscopically eyes showed degeneration and coagulation of lensprotein with mononuclear cell in ltration. Brain revealed gliosis, central chromatolysis, neuronal degeneration and perivascular cuf ng.Proventriculus, gizzard and panc reatic islets showed lymphocyticin ltrations.

Key Words: Avian encephalomyelitis, corneal opacity, ELISA, histopathology

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