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Year : 2018, Volume : 42, Issue : 4
First page : ( 271) Last page : ( 275)
Print ISSN : 0250-4758. Online ISSN : 0973-970X. Published online : 2018 December 1.
Article DOI : 10.5958/0973-970X.2018.00062.7

Infectious coryza in birds complicated by other bacterial infections

Dwivedi Sandeep1, Swamy Madhu1,*, Dubey Amita1, Verma Yamini1, Singh A.P.1

1Department of Veterinary Pathology, College of Veterinary Science and A.H., Nanaji Deshmukh Veterinary Science University, Jabalpur-482001, Madhya Pradesh, India

*Corresponding author: e-mail: vetpath@rediffmail.com

Received:  23  August,  2018; Accepted:  14  December,  2018.

Abstract

Infectious Coryza (IC), caused by Avibacterium paragallinarum, is an infectious and highly contagious bacterial respiratory disease of poultry. The present communique deals with the pathological investigation of complicated cases of Infectious Coryza. The dead birds with nasal/lacrimal discharge and swollen sinuses were screened for the presence of Avibacterium paragallinarum and other concurrent bacterial infection by PCR and microbial culture, respectively. The birds (n=08) found positive for Avibacterium paragallinarum were also found to be infected with other bacteria like E. coli, Klebsiella, Salmonella and Pseudomonas. Pathologically, fibrinous deposits were seen in airsac, liver and heart of all the birds but more severe changes were seen in birds with concurrent E. coli infection. The histopathological lesions like tracheitis and deciliaton were consistently observed in the trachea, and lungs from all birds with complicated coryza and also showed interstitial pneumonic changes. All these cases were diagnosed as complicated cases of infectious coryza.

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Keywords

Avibacterium paragallinarum, Infectious Coryza, Poultry.

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