Table 2 Baseline table of number of samples and batches, farm-level and within-farm results, for all farms and per farm type.
Farm type Variable | All farms | Conventional farms | Organic farms | High health farms | HyCare farms |
|---|---|---|---|---|---|
Number of samples | 10Â 515 | 7202 | 941 | 1182 | 1185 |
Median number of samples per batch (IQR) | 6 (6–6) | 6 (6–6) | 6 (6–6) | 6 (6–6) | 6 (6–6) |
Number of batches | 1711 | 1202 | 158 | 185 | 166 |
Number of farms | 208 | 162 | 20 | 16 | 10 |
Median number of batches per farm (IQR) | 8 (6–9) | 8 (6–9) | 8 (8–9) | 13 (9–14) | 18 (13–21) |
Farm-level percentage with ≥ 1 seropositive pig at slaughter | 100% | 100% | 100% | 100% | 100% |
Mean within-farm seropositive percentage (IQR) | 73.6% (66.7–87.2%) | 73.8% (66.1–87.5%) | 81.4% (76.6–87.2%) | 70.2% (40.9–86.8%) | 66.8% (60.9–75.5%) |
Farm-level percentage ≥ 1 PCR positive batch at slaughter | 89.4% | 94.4% | 15.0% | 100% | 100% |
Mean within-farm percentages of PCR positive batches (IQR) | 40.2% (25.0–57.1%) | 44.0% (30.0–59.6%) | 8.33% (0.00–12.5%) | 41.0% (25.8–56.7%) | 42.8% (38.8–47.0%) |
Percentage of farms ≥ 1 PCR−ELISA− batch | 32% | 29% | 29% | 44% | 70% |