Detection of Mycobacterium avium subsp. paratuberculosis (MAP) from Subclinical Caprine Paratuberculosis Cases of Odisha

Paratuberculosis is caused by Mycobacterium avium subsp. Paratuberculosis (MAP) and is a chronic, intestinal tract infection in the ruminant sector globally. A total of 122 EDTA mixed blood samples, 121 serum and 16 pooled faecal samples were collected from farms of 4 different districts i.e. Nayagarh, Cuttack, Khordha and Angul and a blind review was conducted at the Animal Health Division, CIRG, Mathura. Microscopic examination of 16 pooled faecal samples revealed +2 reactivity to Acid-Fast Bacilli. All the serum samples were subjected to indirect ELISA. Out of them, 23 (19.01%), 85 (70.25%), shows strongly positive, positive, antibody titre respectively. EDTA blood samples of 23 ELISA-strongly positive were subjected to 413 bp IS900 PCR and 11 (9%) of them were found positive for Mycobacterium avium subsp. Paratuberculosis (MAP). MAP isolates were further subjected to genotyping using 608 bpIS1311 PCR and restriction endonuclease analysis (IS1311 PCR-REA) and 2 (1.64%) of them matched with “Indian Bison Type”. Genotyping of the isolates using IS1311 PCR-REA revealed that goat population of Odisha are primarily infected with “Indian Bison Type” strains.