Table 3.
Herd A
| Week after arrival | ||||
|---|---|---|---|---|
| 0 | 4 | 8 | 12 | |
| A. pleuropneumoniae, type 2 | 8/12 | 12/12 | 12/12 | 11/11 |
| A. pleuropneumoniae, type 3 | 0/12 | 2/12 | 8/12 | 8/11 |
| M. hyopneumoniae | 0/12 | 0/12 | 0/12 | 0/11 |
| P. multocida | 7/12 | 10/12 | 12/12 | 11/11 |
| S. suis | 1/12 | 4/12 | 5/12 | 4/11 |
Number of seropositive pigs in 12 pigs repeatedly analysed during the fattening period at a time when pleuritis was registered in 33.1 % of the pigs at slaughter. At week 12, one of the pigs was slaughtered. For details about serum antibody levels, see the corresponding Fig. 2