Case Report

Avian poxvirus in a free-range juvenile speckled (rock) pigeon (Columba guinea)

Dauda G. Bwala, Folorunso O. Fasina, Neil M. Duncan
Journal of the South African Veterinary Association | Vol 86, No 1 | a1259 | DOI: https://doi.org/10.4102/jsava.v86i1.1259 | © 2015 Dauda G. Bwala, Folorunso O. Fasina, Neil M. Duncan | This work is licensed under CC Attribution 4.0
Submitted: 27 December 2014 | Published: 30 April 2015

About the author(s)

Dauda G. Bwala, Poultry Reference Centre, Department of Production Animal Studies, University of Pretoria, South Africa
Folorunso O. Fasina, Department of Production Animal Studies, University of Pretoria, South Africa
Neil M. Duncan, Pathology Section, Department of Paraclinical Sciences, University of Pretoria, South Africa


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Abstract

A flightless wild juvenile rock pigeon (Columba guinea) with pox-like lesions was picked up on the premises of the Faculty of Veterinary Science, University of Pretoria, Onderstepoort. The pigeon was housed overnight for possible treatment the following day but died before any other intervention could be instituted. At necropsy, coalescing masses of yellowish nodular cutaneous tumour-like lesions principally on the featherless areas were noticed on the dead pigeon’s head as well as the beak. Histological examination of the sampled skin lesions revealed multifocal areas of hypertrophic and hyperplastic epidermal epithelial cells with eosinophilic intracytoplasmic inclusion bodies (Bollinger bodies). Extract from the lesion was processed and inoculated on the chorioallantoic membranes (CAM) of 11-day-old embryonated chicken eggs and this produced pocks on one of the CAM at day 7 post-inoculation. Electron microscopy confirmed the presence of poxvirus in the CAM with the pock lesions.

Keywords

poxvirus; speckled pigeon; electron microscopy

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