Clinical and Histopathological Investigation of Pigeon Orthoavulavirus in Sohag Governorate

Document Type : Research article

Authors

1 Poultry diseases department, faculty of veterinary medicine, Sohag university, Sohag, Egypt

2 Avian and Rabbit Medicine Department, Faculty of Veterinary Medicine, Assiut University, Asyut, Egypt

3 Pathology and Clinical Pathology Department, Faculty of Veterinary Medicine, Sohag University

4 Poultry Diseases Department, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt

Abstract

Newcastle disease (ND) is a highly contagious and destructive viral disease affects poultry and other birds worldwide. Pigeon paramyxovirus serotype 1, is the antigenic "pigeon variant" of the virus that causes ND in pigeons, also known as Avian Orthoavulavirus. Central nervous system symptoms and occasionally high death rates are noted during infection. The study aimed to examine the columbiforms infected with avian orthoavulavirus based on clinical signs, gross lesions and histological changes. Some organs from affected pigeons were obtained for the study. They consist of the brain, spinal cord, liver, trachea, pancreas, proventriculus, duodenum and heart. The histological analysis of these organs revealed numerous histological alterations, including fibrosis and vascular alterations in certain areas, as well as degenerative, necrotic, and inflammatory alterations in all the tissue examined. Our study explains why it is necessary to investigate avian orthoavulavirus infection in pigeon in the Sohag governorate. It is an important step in the direction of a deeper comprehension of the virus in columbiforms. The results showed that because the virus can replicate in any tissue organ, it causes lesions and major problems.

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