Thursday, 1 June 2017
Prevalence of paratuberculosis in organized and unorganized dairy cattle herds in West Bengal, India
Research (Published online: 02-06-2017)
2. Prevalence of paratuberculosis in organized and unorganized dairy cattle herds in
West Bengal, India
Jitendrakumar M. Bhutediya, Premanshu Dandapat, Arijit Chakrabarty, Ratan Das, Pramod Kumar
Nanda, Samiran Bandyopadhyay and Tapas Kumar BiswasVeterinary World, 10(6): 574-579
Aim: The aim of this study was to determine the prevalence pattern of Mycobacterium avium subsp. paratuberculosis, the causative
agent of paratuberculosis or Johne's disease, in unorganized as well as organized cattle herds in West Bengal.
districts and three unorganized cattle herds, one each from three districts, namely, Burdwan, North 24 Parganas, and Purba Midnapur,
were selected randomly and screened for paratuberculosis by delayed-type hypersensitivity (DTH) and enzyme-linked immunosorbent assay (ELISA).
seropositivity varied from 13.3% to 53.1%, whereas in unorganized sector, it ranged from 5% to 6.7% with one area having exceptionally
high prevalence, i.e. 53.3%. The range of positivity detected by DTH both in organized farms and backyard sectors varied from 0% to 46.7%.
By employing both DTH and ELISA together, the positivity of animals in organized and unorganized herds was 19.9% and 8%, respectively.
For screening the herd, both DTH and ELISA should be used simultaneously to increase the test sensitivity in order to minimize its further
spread adopting control programs.
Keywords: cattle, India, Johne's disease, paratuberculosis, prevalence, West Bengal.