PATHOLOGICAL AND MOLECULAR STUDIES OF NEWCASTLE DISEASE IN DESI CHICKEN
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Date
2022
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TANUVAS, CHENNAI
Abstract
A total of 26 Newcastle disease (ND) suspected cases from natural outbreak in
desi chicken were studied. Polymerase chain reaction conducted for fusion gene of
Newcastle disease virus (NDV) using tissue sample of desi chicken confirmed the
presence of NDV in tissue samples of 16 cases which alone were taken for further pathological and molecular studies.
The higher incidence of ND was noticed in desi chicken above 6 months of age.
Grossly, haemorrhage was observed in oesophageo-proventricular junction,
proventriculus, intestine and caecal tonsil. Ulcer was noticed in the intestine. Necrosis
was observed in the oesophagus, crop, proventriculus, intestine and caecal tonsil.
Congestion in the nasal turbinate mucosa, trachea, lungs, kidney, liver and conjunctiva
was noticed in ND affected desi chicken.