Confirmed bacterial identification

NO.

Ag58-B

PPD antigen

Mean OD ± SD (OD range)

+ve cases *

%

Mean OD ± SD (OD range)

+ve cases †

%

 

M. bovis

 

M. tuberculosis

 

 Non-tuberculous Mycobacterium spp.
        
         Sub-total

Non-Mycobacterium spp.
        

 

12

 

18

 

36

 
66

23

 

0.546 ± 0.156
(0.209– 0.748)


0.560 ± 0.203
(0.203 – 0.862)


0.364 ± 0.173
(0.074 – 0.674)

 

0.126 ± 0.025
(0.076 - 0.189)

 

12

 

18

 

28


58

3

 

100

 

100

 

77.8

 
87.9

13

 

0.534 ± 0.145
(0.203 – 0.821)


0.544 ± 0.131
(0.323 – 0.794)


0.544 ± 0.131
(0.323 – 0.794)

 

0.180 ± 0.086
(0.086 – 0.376)

 

11

 

18

 

28


57

8

 

91.7

 

100

 

77.8


86.4

34.8

* cutoff point for Ag85-B = 0.144, † cutoff point for tuberculin PPD = 0.212
Table 1: Serodiagnosis of swine mycobacteriosis by ELISA detection of anti-mycobacterial IgG in swine sera using Ag85-B and tuberculin PPD antigens.