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Avian Pathol.: Cutaneous form of pox infection among
captive peafowl (Pavo cristatus) chicks.
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| Article Type: | Brief article |
| Subject: |
Peafowl
(Health aspects) Peafowl (Research) DNA viruses (Health aspects) DNA viruses (Research) Virus diseases (Risk factors) Virus diseases (Research) Virus diseases (Diagnosis) |
| Authors: |
Khan, A. Yousaf, A. Khan, M.Z. |
| Pub Date: | 09/01/2009 |
| Publication: | Name: Journal of Avian Medicine and Surgery Publisher: Association of Avian Veterinarians Audience: Academic Format: Magazine/Journal Subject: Health Copyright: COPYRIGHT 2009 Association of Avian Veterinarians ISSN: 1082-6742 |
| Issue: | Date: Sept, 2009 Source Volume: 23 Source Issue: 3 |
| Topic: | Event Code: 310 Science & research |
| Geographic: | Geographic Scope: United States Geographic Code: 1USA United States |
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| Accession Number: | 252006991 |
| Full Text: |
The present study was carried out to investigate the epidemiology
and lesions of avian pox in captive peafowl chicks. Overall values of
morbidity, mortality, and case fatality were 45.2%, 27.1%, and 60.0%,
respectively. The chicks of 9 to 12 weeks of age showed a significantly
(P < .001) higher prevalence rate than other age groups. The
morbidity and mortality due to avian pox in peafowl chicks was
significantly (P < .001) reduced when kept in mosquito-proof cages
and hatched under broody chicken hens. Morbidity due to poxvirus
infection on the peafowl farm was 82%, 26%, and 12% in successive years.
This reduction might have been the result of the introduction of
mosquito-proof nets after year 1, although this was not the subject of a
controlled experiment. All of the peafowl chicks suffering from dry pox
showed pustular and nodular lesions on eyelids, beak, legs, and toes.
Distribution of lesions in different body parts varied significantly (P
< .023). Lesion diameters were less than 1 cm (59.73%), 1-2 cm
(23.75%), and more than 2cm (16.87%). Histopathologic studies revealed
extensive proliferation of subdermal connective tissue and infiltration
of heterophils and macrophages. The keratinocytes showed degenerative
changes in the form of cytoplasmic vacuolation, ballooning, and
hyper-chromatic nuclei. Eosinophilic intracytoplasmic inclusions
(Bollinger bodies) in keratinocytes were consistently present. It was
concluded that avian pox rendered high morbidity, mortality, and case
fatality in peafowl chicks. 2009;38:65-70. |
| Gale Copyright: | Copyright 2009 Gale, Cengage Learning. All rights reserved. |