Table 1.
Effect of diagnostic techniques and origin of tissues on the detection rate of bovine tuberculosis.
| Tissue sample | TB lesions at abattoir examination | Ziehl-Neelsen | Bacteria Culture | |||
|---|---|---|---|---|---|---|
| + | % | + | % | + | % | |
| Retropharyngeal lymph nodes | ||||||
| 0 | 0 (3) | 0.0 | 0 (3) | 0.0 | 0 (3) | 0.0 |
| 1 | 5 (5) | 100.0 | 1 (5) | 20.0 | 2 (5) | 40.0 |
| Total | 5 (8) | 62.5 | 1(8) | 12.5 | 2 (8) | 25.0 |
| Mediastinal & bronchial lymph nodes | ||||||
| 0 | 0 (13) | 0.0 | 1 (13) | 7.69 | 2 (13) | 15.38 |
| 1 | 32 (32) | 100 | 8 (32) | 25.0 | 18 (32) | 56.25 |
|
| ||||||
| Total | 32 (45) | 71.11 | 9 (45) | 20.0 | 17 (45) | 37.78 |
|
| ||||||
| Mesenteric lymph nodes | ||||||
| 0 | 0 (7) | 0.0 | 2 (7) | 28.57 | 2 (7) | 28.57 |
|
| ||||||
| Total | 0 (7) | 0.0 | 2 (7) | 28.57 | 2 (7) | 28.57 |
|
| ||||||
| Liver | ||||||
| 0 | 0 (6) | 0.0 | 1 (6) | 16.67 | 2 (6) | 33.3 |
| 1 | 2 (2) | 100.0 | 0 (2) | 0.00 | 2 (2) | 100.0 |
|
| ||||||
| Total | 2 (8) | 25.0 | 1(8) | 12.5 | 4 (8) | 50.0 |
|
| ||||||
| all tissue samples | ||||||
| 0 | 0 (29) | 0.00 | 4 (29) | 13.79 | 6 (29) | 20.69 |
| 1 | 39 (39) | 100 | 9 (39) | 23.08 | 22 (39) | 56.41 |
|
| ||||||
| Total | 13 (68) | 19.11 | 28 (68) | 41.18 | ||
0 = no TB lesion found; 1 = TB lesions present; ( ) = number of samples.