Gross and microscopic pathology of pigeon paramyxovirus serotype 1 (PPMV-1) infection in racing pigeons (Columba livia domestica) from Luzon, Philippines

Issue Date

1-2024

Abstract

Background: Pigeon paramyxovirus serotype 1 and other virulent NDVs are known to cause multi-systemic infection in birds. However, very little is known about its pathology in poultry species. Methods: In this study, the gross and histopathological changes in various organs of PPMV-1-infected racing pigeons were characterized and morphologically diagnosed. A total of fifteen organs, grouped into organ systems, were analyzed. Results: Clinical history revealed that all pigeons were exhibiting nervous and gastrointestinal signs such as torticollis and green-white diarrhea. Morbidity and mortality rates were spiking at 10 to 15% and 10%, respectively. Gross and in situ examination showed that the brain, heart, lungs, and gastrointestinal tract were mostly affected. The majority of the macroscopic lesions include hemorrhage and variable signs of necrosis and degeneration. Histologically, the brain, kidneys, lungs, and portion of the gastrointestinal tract had presented multiple lesions which include congestion, hemorrhage, and vasculitis. Diffuse lymphoid depletion and necrosis were also notable in all lymphatic organs and related tissues. Conclusion: The results of this investigation support the multi-systemic involvement of the infection which further validates the need for stronger preventive and control measures against PPMV-1 and other avian paramyxoviruses not only for the domestic poultry but also for the other avian species.

Source or Periodical Title

Philippine Journal of Veterinary Medicine

ISSN

0031-7705

Volume

61

Issue

1

Page

66-74

Document Type

Article

College

College of Veterinary Medicine (CVM)

Frequency

semi-annually

Physical Description

illustrations

Language

English

En – AGROVOC descriptors

PIGEONS; RACING, PIGEONS; HISTOPATHOLOGY; PATHOLOGY; GASTROINTESTINAL SYSTEM; TORTICOLLIS; INFECTION; PHILIPPINES

Link to Full Text

Share

COinS