Studies on some mycobacterial organisms in cows

The study was carried out to investigate the mycobacterial strainsisolated from suspected tuberculous like lesion in non-tested tuberculinslaughtered cattle on military abattoir. Specific attention was directed to the tuberculous mycobacteriaThe diagnostic evaluation value of different antigens by ELISA test consequently the present study showed the following:* from 1500 cross breed beef cattle, 60 showed suspected tuberculous likelesion on PM examination.* Out of 700 (age less than 2.5 years) slaughtered cattle, 6 (0.85%)showed tuberculous like lesion.Out of 400 slaughtered cattle (aged 2.5 - 3 years), only 20 (5%) showedsuspected tuberculous like lesions.Out of 250 slaughtered cattle (aged 3.5 - 4 years), only 20 (8%) showedsuspected tuberculous like lesion.Out of 150 slaughtered cattle (aged more than 4 years), only 14 (9.3%)showed suspected tuberculous like lesions.* The bacteriological examination of 60 suspected slaughtered cattle, only41 gave positive culture.The biochemical identification of isolated acid fast bacilli revealed that 37 (61.7%) M. bovis and 4 (6.7%) MaTT. The (4) atypical