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OJVRTM
Online Journal of Veterinary Research©
Volume 19(8): 561-566, 2015.
Natural poxvirus
infection in a lark (Melanocorypha bimaculata)
Monire Khordadmehra٭, Vahid Reza Ranjbarb,
Roya Shahbazi a, Moein
Zehtab- Najafi a,
Javad Ashrafi- Helana
aDepartment of Pathobiology, School of Veterinary Medicine, Tabriz University,
bVeterinary Clinic Avian Diseases, Yazd
Province, Iran.
ABSTRACT
Khordadmehra M, Ranjbarb VR, Shahbazi
R, Najafi MZ, Helana JA., Natural Poxvirus infection in a lark (Melanocorypha bimaculata)., Onl J Vet Res., 19(8): 561-566, 2015. Avian pox is caused by DNA viruses of the family Poxviridae and genus Avipoxvirus which infects animals and birds. We
report natural poxvirus infection
determined by PCR and histopathology in a bimaculated lark (Melanocorypha bimaculata). A lark without clinical signs presented a large brown cutaneous mass with rough nodular surface in one leg. At necropsy, the mass measured 1.3×1.3 cm
with a thick scab, ulcer and a secondary infection on the surface. Sectional
cut of the mass was discrete,
round, white to gray, firm and with no liquefied foci in the center. Grossly, all visceral organs, liver, kidney and respiratory
systems appeared normal. Histological examination revealed severe hypertrophy and hyperplasia of the
epidermis, degeneration of epithelial cells with large eosinophilic inclusion
Bollinger bodies distending the cytoplasm. Heterophil-rich
inflammatory cells were present in the dermis. PCR test revealed a typical 578
base pair of Canary Pox Virus DNA in tissue samples.
Keyword Avipoxvirus; bimaculated lark; cutaneous mass; cellular degeneration;
inclusion body, PCR.
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