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Molecular detection and pathology of spontaneous cases of Chronic Respiratory Disease in chicken

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Title Molecular detection and pathology of spontaneous cases of Chronic Respiratory Disease in chicken
Not Available
 
Creator Susitha Rajkumar
M.R. Reddy
R. Somvanshi
 
Subject CRD
molecular detection
M. gallisepticum
M. synoviae
pathology
ultrastructural changes
 
Description Not Available
Chronic Respiratory Disease (CRD) is a major problem causing morbidity and mortality which leads to economic loss to the poultry
industry. The present research was carried out to study the gross, microscopic and ultrastructural changes in target tissues of natural cases
of CRD and to detect the presence of causative pathogenic M. gallisepticum and M. synoviae. Routine post mortem examination of birds
submitted to Avian Health Laboratory, DPR, Hyderabad were carried out and from selected CRD cases, the presence of M. gallisepticum and
M. synoviae was confirmed by PCR. Results showed a higher prevalence of M. synoviae (25.98%) than M. gallisepticum (9.45%) in samples
collected from CRD affected birds. Gross lesions included cloudiness of air sacs, presence of caseous mass in the air sacs, congested
tracheal mucosa with catarrhal exudates and caseous materials and congestion and oedema of lungs. Occasionally, sinusitis, conjunctivitis,
pericarditis, perihepatitis and salpingitis were also observed. Microscopic changes were edema, congestion and infiltration of mononuclear
cells. Ultrastructural studies showed nucleoplasmolysis, margination of nuclear chromatin and swelling of perinuclear cisternae, dilatation of
RER and swollen and damaged mitochondria in the air sac and trachea of birds suffering from CRD and positive for M. synoviae.
ICAR
 
Date 2018-11-09T05:16:32Z
2018-11-09T05:16:32Z
2017-12-01
 
Type Research Paper
 
Identifier Rajkumar, S., Reddy, M. R., & Somvanshi, R. (2017). Molecular detection and pathology of spontaneous cases of Chronic Respiratory Disease in chicken. Indian Journal of Veterinary Pathology, 41(4), 277-282.
0250-4758
http://krishi.icar.gov.in/jspui/handle/123456789/9796
 
Language English
 
Relation Not Available;
 
Publisher Indian Association of Veterinary Pathologists