Vol. 7, Issue 4 (2018)

Author(s):
Preeti, Suresh Kumar, Laxmi Bai, Ramkaran, Naresh Jindal and Renu Gupta

Abstract:
Infectious bursal disease (IBD) is an acute and highly contagious viral infection of poultry. The present study was conducted to analyse the epidemiological data of IBD in poultry from January, 2012 to December, 2015. The disease was diagnosed on the basis of clinical presentation of dullness, depression, yellowish diarrhoea, ruffled feathers and sudden increase in mortality and gross pathology. Of the 12,858 poultry flocks presented for disease investigation during the fouryears period, 585 (4.55%) flocks were affected with IBD. Overall morbidity, cumulative mortality and case fatality rate due to IBD were 4.38%, 2.62% and 59.68%, respectively. The birds of age group of 21-30 days were more affectedwith IBD as compared to other age groups. The disease was recorded throughout the year with higher incidence in autumn/spring season (n=162 flocks; 27.69%) followed by rainy season (n=151 flocks; 25.81%). Of the 585 IBD affected flocks, 400 (68%) flocks had the history of IBD vaccination while the remaining 185 (32%) flocks were unvaccinated against this disease.