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Pathomorphological Changes of Oviduct in Spontaneous Cases of Newcastle Disease in Layer Chicken

KrishiKosh

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Title Pathomorphological Changes of Oviduct in Spontaneous Cases of Newcastle Disease in Layer Chicken
Indian J. Vet. Pathol., 38(1) : 52-56
 
Creator Srinivasan, P.
Balasubramaniam, G.A.
Murthy, T.R. Gopala Krishna
Balachandran, P.
 
Subject Layer
Newcastle disease
Oviduct
Pathology
 
Description Newcastle disease is a major constrain to commercial layer production in India due to high mortality and egg production loss. The disease was found to be one of the predominant cause affecting oviduct with an overall prevalence rate of 27.23% and commonly noticed in the age group of 21 to 50 weeks during the summer season. In the affected flocks drop in egg production, morbidity and mortality were in the range of 5 to 40, 2 to 35 and 0.5 to 15%, respectively. Grossly, in acute death, the visceral organs revealed marked congestion and petechial haemorrhages on the proventricular papillae. Oviduct was congested and the uterus contained partially or fully formed eggs. Cyanosis of comb, congested tracheal mucosa with catarrhal exudate, petechial haemorrhages on the proventricular papillae and caecal tonsils were noticed in chronic cases. The ovarian follicles were misshapened, congested, haemorrhagic and ruptured with yolk materials
in the abdominal cavity. Mild to moderate reduction in the size of the oviduct, congestion of the serosal vessels and pale and dry less prominent mucosal folds were observed. Microscopically, in birds died of acute disease, the oviduct showed congestion, edema and haemorrhages, and necrotic changes in the surface epithelia and glandular epithelial cells resulting in desquamation and accumulation of cellular debris in the lumen. In chronic cases, along with the above changes, focal to scattered lymphocytic and plasmacytic infiltration in the interstitium was noticed throughout the oviduct, however more pronounced in the magnum and uterus region. In immunoperoxidase test, NDV antigen appeared as moderate to dark golden brown fine granular material in the cytoplasm of surface epithelium, tubular glands and adjoining to the damaged epithelial cells.
 
Date 2016-06-28T13:12:06Z
2016-06-28T13:12:06Z
2014
 
Type Article
 
Identifier http://krishikosh.egranth.ac.in/handle/1/68135
 
Language en
 
Format application/pdf
 
Publisher Indian Journal of Veterinary Pathology