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              Open Access  
Copyright: The authors. This article is an open access 
article licensed under the terms of the Creative Commons Attribution License 
 
 
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distribution and reproduction in any medium, provided the work is properly 
cited. 
 
              
              
              Research 
              
              
(Published online: 
				24-11-2015) 
              
              11. Histopathological and immunohistochemical diagnosis 
				of infectious bursal disease in poultry birds - 
              
              J. Singh, H. S. Banga, R. S. Brar, N. D. Singh, S. Sodhi and G. D. 
				Leishangthem 
              
              Veterinary World, 8(11): 1331-1339   
              
   
                
                
doi: 
              10.14202/vetworld.2015.1331-1339   
				J. Singh: 
              
              	Department of Veterinary Pathology, College of Veterinary 
				Science, Guru Angad Dev Veterinary and Animal SciencesUniversity, Ludhiana, Punjab, India;
              
              
              	js_arora23@yahoo.com
 
				H. S. Banga: 
              
              	Department of Veterinary Pathology, College of Veterinary 
				Science, Guru Angad Dev Veterinary and Animal SciencesUniversity, Ludhiana, Punjab, India;
              
              
              	bangahs3@yahoo.com
 
				R. S. Brar: 
              
              	Department of Veterinary Pathology, College of Veterinary 
				Science, Guru Angad Dev Veterinary and Animal SciencesUniversity, Ludhiana, Punjab, India;
              
              
              	rsbrar@email.com
 
				N. D. Singh: 
              
              	Department of Veterinary Pathology, College of Veterinary 
				Science, Guru Angad Dev Veterinary and Animal SciencesUniversity, Ludhiana, Punjab, India;
              
              
              	drndsingh@gmail.com
 
				S. Sodhi: 
              
              	Department of Veterinary Pathology, College of Veterinary 
				Science, Guru Angad Dev Veterinary and Animal SciencesUniversity, Ludhiana, Punjab, India;
              
              
              	sandip_sodhi@yahoo.com
 
				G. D. Leishangthem: Department of Veterinary Pathology, 
				College of Veterinary Science, Guru Angad Dev Veterinary and 
				Animal SciencesUniversity, Ludhiana, Punjab, India;
				
				drgeetapatho@gmail.com
 
				Received: 27-06-2015, Revised: 04-10-2015, Accepted: 15-10-2015, 
				Published online: 24-11-2015
   
              
              
              Corresponding author:J. Singh, e-mail: js_arora23@yahoo.com 
 
              Citation:Singh J, Banga HS, Brar RS, Singh ND, Sodhi S, Leishangthem GD 
				(2015) Histopathological and immunohistochemical diagnosis of 
				infectious bursal disease in poultry birds, Veterinary World 
				8(11): 1331-1339. 
 
              Abstract 
 Aim: 
				The aim of the present study was to diagnose infectious bursal 
				disease (IBD) using gross, histopathological, and 
				immunopathological approaches and to compare efficacy of 
				immunohistochemical techniques with conventional diagnostic 
				techniques.Materials and Methods: A total of 33 samples were 
				collected from the six different poultry farms from Ludhiana and 
				the nearby districts. Upon gross analysis of the necropsied 
				birds, the relevant tissue samples such as bursa, kidney, 
				junction of proventriculus and gizzard, heart, and muscles were 
				then processed for histopathological and immunohistochemical 
				studies.
 
				Results: Varied macroscopic changes were noted in bursa, 
				characterized as swollen, hemorrhages to atrophy in size. 
				Nonetheless, hemorrhages over thigh muscles were rarely seen. 
				Histologically, the bursa showed prominent fibrotic and atrophic 
				changes. Rarefaction of bursal follicles with intermittent 
				infiltration of lympho-mononuclear cells with chronic cystic 
				changes was additional changes, considered to be paramount for 
				IBD. Expression and localization of IBD specific viral antigens 
				were noticed mainly intracellular to the rarefied areas of 
				bursal follicle section(s), in conjunction to inner lining of 
				the cystic cavities of affected follicles. In addition, the 
				junction of proventriculus and gizzard, the heart muscle, 
				respiratory ciliated epithelium, and proventriculus also 
				revealed positive expression to IBD virus (IBDV) antigen. 
				Advanced immunopathological techniques, i.e., immunofluorescence 
				further testified the evidence of antigen as positive green 
				signal within affected follicles. Further consideration to the 
				reliability of various techniques employed, positive correlation 
				(r=0.64623) was emerged out with conventional pathological 
				scoring.Conclusion: It is concluded that the bursa acts as an 
				organ of choice for demonstrating IBDV antigen for specific 
				diagnosis of disease using immunohistochemistry (IHC), and IHC 
				staining is a precise, specific, rapid, and reliable method to 
				demonstrate the IBDV antigen in the altered tissues due to IBDV 
				infection.
 Keywords: histopathology, immunohistochemical, infectious 
				bursal disease.
 
 
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