Table 1.
Number of samples collected and animal quantity in each farm.
| Swine Farms | No. of Air Samples Impaction * | No. of Air Samples Impinger | No. of Surfaces Samples (Walls) | No. of Feed Samples | No. of Floor Cover Samples | Animal Quantity |
|---|---|---|---|---|---|---|
| A | 20 | 5 | 5 | 2 | 1 | 1768 |
| B | 20 # | 5 | 5 | 2 | 1 | 8000 |
| C | 20 | 4 # | 5 | 2 | 1 | 3300 |
| D | 20 | 5 | 5 | 2 | 1 | 6000 |
| E | 16 + | 4 | 4 | 2 | 1 | 7000 |
* At each working site, 4 air samples were taken for each media (malt extract agar (MEA), dichloran glycerol (DG18), tryptic soy agar (TSA), Violet Red bile agar (VRBA)); +: farm without pig fattening; #: one sample lost.