Table 3.
Mean turbinate atrophy scores and percentages of the lungs affected by pneumonia in pigs inoculated with B. bronchiseptica KM22 or TN31 (Bvgi isogenic mutant)
| Day of necropsy | Group | Mean turbinate atrophy score (range) | Mean % pneumonia (range) |
|---|---|---|---|
| 7 | PBS control | 1.5 (0–2) | 0.875 (0–2) |
| KM22 (BvgWT) | 3.75 (1–8) | 3.625 (0–10) | |
| TN31 (Bvgi) | 1.25 (0–2) | 1.0 (0–3.5) | |
| 14 | PBS control | 0.5 (0–1) | 0.75 (0–3) |
| KM22 (BvgWT) | 4.5 (2–8) | 7.5 (2–20) | |
| TN31 (Bvgi) | 1.0 (0–2) | 0.25 (0–1) | |
| 28 | PBS control | 0.25 (0–1) | 0.25 (0–1) |
| KM22 (BvgWT) | 5.75 (3–8) | 9.75 (0–17) | |
| TN31 (Bvgi) | 1.5 (1–4) | 0 (0) | |
| 56 | PBS control | 1.25 (1–2) | 0 (0) |
| KM22 (BvgWT) | 4.75 (4–6) | 5.0 (2–13) | |
| TN31 (Bvgi) | 1.5 (0–4) | 0.875 (0–3.5) |