Table 7.
Prevalence (%) of ultrasonographic examination parameters of the right lung—comet tail artifacts (COMT) and consolidations (CON), alveolograms (ALV), atelectases (ATA), pleural effusions (FLU), and findings of postmortem inspection. In total, 600 calves were examined (150 calves per season).
| Ultrasonography | Postmortem Inspection | ||||
|---|---|---|---|---|---|
| Lung Area (n = 600) |
Diagnosis | Start | Start − End | Diagnosis | Prevalence |
| R1 | COMT/CON | 81.7 b | −8.0 | 0 | 41.0 a,b,c,d |
| ALV | 6.5 | −1.0 | 1 | 20.5 a,b,d | |
| ATA | 4.5 | +0.3 | 2 | 19.7 a,b,d | |
| FLU | 0.8 | −0.3 | 3 | 15.8 a,b,d | |
| Total | 23.4 | −2.3 | Total | 56.0 a,b,c,d | |
| R2 | 0 | 60.7 a,b,c,d | |||
| 1 | 19.7 a,b,d | ||||
| 2 | 13.5 b,d | ||||
| 3 | 6.2 c | ||||
| Total | 39.3 a,b,c,d | ||||
| R3 | COMT/CON | 72.8 | −9.3 | 0 | 89.2 c,d |
| ALV | 5.5 | −0.7 | 1 | 4.8 c,d | |
| ATA | 3.8 | +0.3 | 2 | 3.2 c,d | |
| FLU | 0.8 | −0.3 | 3 | 2.8 c | |
| Total | 20.8 | −2.5 | Total | 10.8 c,d | |
a–d Alphabetical indices for significant difference between seasons (p < 0.05): a = spring, b = summer, c = autumn, d = winter.