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 |
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Creator |
Susitha Rajkumar
M.R. Reddy R. Somvanshi |
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Subject |
CRD
molecular detection M. gallisepticum M. synoviae pathology ultrastructural changes |
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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 |
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Date |
2018-11-09T05:16:32Z
2018-11-09T05:16:32Z 2017-12-01 |
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Type |
Research Paper
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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 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Indian Association of Veterinary Pathologists
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