Table 4 PCV-2 IgG ELISA mean S/P ratios obtained prior to vaccination (3–4 woa), grouped based on PCV-2 qPCR results at 3–4, 6 and 9 woa in the 28 farms sampled in 2022
PCV-2 qPCR | PCV-2 IgG ELISA prior to vaccination | ||
|---|---|---|---|
Result | Sampling time-point | S/P ratio | |
X̅ ± SD | CV (%) | ||
Positive | Only at 6 woa | 0.432 ± 0.298 ab | 69.0 |
Only at 9 woa | 0.647 ± 0.345 a | 53.4 | |
At 3–4 and 9 woa | 0.280 ± 0.205 b | 73.3 | |
At 6 and 9 woa | 0.470 ± 0.260 ab | 55.4 | |
At 3–4, at 6 and at 9 woa | 0.378 ± 0.204 ab | 54.0 | |
Negative | At 3–4, at 6 and at 9 woa | 0.541 ± 0.285 ab | 52.7 |
Total | 0.530 ± 0.298 | 56.1% | |