Table 2.
The representative ages and the number of pigs in herd F tested for P1 in serum samples by PCR
| Age of pigs(days) | No. tested pigs | No. P1-affected |
|---|---|---|
| 10-30 | 26 | 13 |
| 40-60 | 27 | 3 |
| 70-90 | 27 | 6 |
| 100-120 | 25 | 4 |
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