Table 2. Assessment of MAP infection status in 155 Holstein Friesian cows included in the study.
| Diagnostic method | Focal (n = 55) | Multifocal (n = 18) | Diffuse (n = 15) | NL (n = 6) | PTB-free farm (n = 61) |
|---|---|---|---|---|---|
| ZN | 49.09% | 94.44% | 100.00% | 0% | UN |
| IDEXX ELISA | 5.45% | 27.78% | 73.33% | 0% | 0% |
| FECAL PCR | 9.09% | 33.33% | 73.33% | 0% | 0% |
| FECAL CULTURE | 5.45% | 16.67% | 26.66% | 0% | 0% |
| TISSUE PCR | 28.30% | 44.44% | 73.33% | 0% | UN |
| TISSUE CULTURE | 28.30% | 44.44% | 66.66% | 0% | UN |
| CLINICAL SIGNS | 0.00% | 21.43% | 64.28% | 0% | 0.00% |
NL, refers to the 6 control animals with no PTB-associated lesions detected in their gut tissue; PTB-free farm; refers to the 61 control animals from a PTB-free farm; UN, undetermined (tissues not available as animals were alive); The calculation of the % of animals with clinical signs is based on animals with known clinical status (focal n = 28, multifocal n = 14, diffuse n = 14, NL n = 4 and PTB-free farm n = 61).