Prevalence of bovine tuberculosis
Author(s): Pravin J Chaudhari, Bharat B Bhanderi and Yash A Desai
Abstract: The aim of this present study was to carried out the prevalence of bovine tuberculosis (bTB), using the single intradermal comparative cervical tuberculin test (SICCT), single intradermal tuberculin (SIT) test and detection of Mycobacterium bovis in cattle from different region (Anand, Rajkot and Mehsana districts) of Gujarat state. Total of 20 dairy farms in 800 animals (620 cattle & 180 buffalo) were studied for the prevalence of bovine TB using single intradermal comparative cervical tuberculin (SICCT) test and single intradermal tuberculin (SIT). Out of the 800 SICCT tested animals, 1.37% (11) were SICCT positive, 12.87% (103) were Avian positive (PPD-A) and 10.62% (85) were SIT positive (PPD-B). Overall prevalence of bTB in SICCT test was 1.37%. and SIT test was 10.62%. Species-wise, highest prevalence of bTB was found in cattle 1.45% (9/620) and in buffalo 1.11% (2/180) by SICCT test. Using SIT test, highest prevalence was observed in cattle 11.45% (71/620) than buffalo 7.77% (14/180). In Cattle, breed-wise highest prevalence of bTB was found in HF cross 2.00% (7/346), followed by Kankrej 1.19% (1/84) and Gir 0.52% (1/190) by SICCT test. Animals testing by SIT test, highest prevalence was observed in HF cross 14.16% (49/346) followed by Kankrej 8.33% (7/84) and Gir 7.89% (16/190). In buffalo, breed-wise highest prevalence of bTB was found in Murrah 14.28% (1/7) followed by Jaffarabadi 2.38% (1/42), Mehsana 0.00% (0/75) and Surti 0.00% (0/56) by SICCT test, whereas highest prevalence was observed in Murrah 28.57% (2/7) followed by Jaffarbadi 16.66% (7/42), Mehsana 5.33% (4/75) and Surti 1.78% (1/56) by SIT test. District-wise, highest prevalence was observed in Anand 1.54% (9/583) followed by Rajkot 1.19% (2/167) and Mehsana 0.00% (0/50) by SICCT test, whereas highest prevalence was observed in Anand 12.52% (73/583) followed by Rajkot 6.58% (11/167) and Mehsana 2.00% (1/50) by SIT test. Prevalence of bovine TB can be done in early stage in live animals with SCCIT test which showed promising results than SIT test.
