Table 3.
Seroprevalence of L. intracellularis in commercial pigs across different regions and growth stages.
| Regions | Sample quantity | Positive quantity | Positive rates (95% CI) |
|---|---|---|---|
| Luochuan | 60 | 6 | 10 (4.1–21.2) |
| Tongchuan | 60 | 4 | 6.7 (2.2–17.0) |
| Weinan | 60 | 9 | 15.0 (7.5–27.1) |
| Zhouzhi | 60 | 12 | 20.0 (11.2–32.7) |
| Chenggu | 60 | 13 | 21.7 (12.5–34.5) |
| Sub-total | 300 | 44 | 14.7 (11.0–19.3) |
| Growth stages | |||
| NP | 50 | 5 | 10.0 (3.7–22.6)a, b |
| GP | 50 | 13 | 26.0 (15.1–40.6)c |
| FP | 50 | 9 | 18.0 (9.1–31.9)a, b, c |
| GS | 50 | 4 | 8.0 (2.6–20.1)a, b |
| LS | 50 | 3 | 6.0 (1.6–17.5)b |
| GT | 50 | 10 | 20.0 (10.5–34.1)a, c |
| Sub-total | 300 | 44 | 14.7 (11.0–19.3) |
Nursery pigs (NP) = 10–25 kg, Growing pigs (GP) = 25–40 kg, Finishing pigs = 40 to till slaughter, Gestation sows (GS), Lactating sows (LS), Gilt (GT) = 50–100 kg, Boars (BR). Superscript letters (a, b, c) indicate statistical differences among groups; groups sharing the same letter show no significant difference (p > 0.05).