title: Prevalence of subclinical infectious bursal disease and its significance in India.
abstract: From a total of 32 poultry flocks, 1,176 serum samples were screened by the agar gel precipitation test and 314 (26.7%) were positive for antibodies to infectious bursal disease virus (IBDV). Prevalence of infection on the farms ranged from 8.88 to 53.84 per cent. The prevalence was highest (61.82%) in chickens between 7 and 11 weeks old and lowest (3.92%) in those above 22 weeks of age. In commercial broilers and layers 51.61 and 17.78% respectively were seropositive reactors. The high prevalence of subclinical IBD and its economic significance are discussed.
authors.affiliation: Department of Veterinary Microbiology, College of Veterinary Sciences and Animal Husbandry, Jabalpur, India.
authors.forename: K C
authors.initials: KC
authors.lastname: Singh
authors.forename: R G
authors.initials: RG
authors.lastname: Dhawedkar
mesh_terms: D000818:Animals; D002645:Chickens; D007194:India / Q000453:epidemiology; D007243:Infectious bursal disease virus; D011201:Poultry Diseases / Q000453:epidemiology*; D015995:Prevalence; D012088:Reoviridae Infections / Q000453:epidemiology* / Q000662:veterinary*