Variable | Peracute | Acute | Subclinical | Uninfected | |
---|---|---|---|---|---|
(n = 9) | (n = 31) | (n = 12) | (n = 9) | ||
Clinical signs | Mortality prior to the end of the experiment (%)* | 9 (100)a | 0 (0)b | 0(0)b | 0 (0)b |
Fever at least one day (%)* | 9 (100)a | 29 (93.5)a | 6 (50)b | 2 (22.2)b | |
Clinical score higher than 0 (%)* | 9 (100)a | 28 (90.3)a | 2 (16.6)b | 3 (33.3)b | |
Mean clinical score (±SD) | 1.88 (±0.80)a | 1.32 (±0.70)a | 0.16 (±0.4)b | 0.44 (±0.8)b | |
Inappetence at least one day (%)* | 9 (100)a | 21(67.7)b | 3 (25.0)c | 2 (22.2)c | |
Production | Mean ADG (±SD) (kg/d) | -1.91 (±0.83)a | 0.47 (±0.4)b | 0.83 (±0.2)c | 0.9 (±0.2)c |
Diagnostic | App-like lesions (%)* | 9 (100)a | 30 (96.7)a | 0 (0)b | 0 (0)b |
App isolation (%)* | 9 (100)a | 30 (96.7)a | 3 (25)b | 0 (0)b | |
PCR detection in tonsil (%)* | 8 (88.8)a | 18 (58.0)a | 10 (83.3)a | 0 (0)b | |
PCR detection in bronchial lymph node (%)* | 5 (55.5)a | 14 (45.1)a | 4 (33.3)a | 0 (0)b | |
Seropositivity to App at death/necropsy* | 0 (0)a | 16 (51.6)b,c | 3 (25.0)a,c | 0 (0)a | |
Mean SPES (Min-Max) | 3.88 (3- 4)a | 2.09 (1-4)b | 0c | 0c | |
Mean LLS (Min-Max) | 17.57 (10.71-31.4)a | 5.17 (0.26-20.94)b | 0c | 0c | |
Mean IA (±SD) | 53.3 (±16.11)a | 17.29 (±14.00)b | 0c | 0c | |
Ratio LW/BW (±SD) | 0.91(±0. 00)a,b** | 1.27 (±0.54)b | 0.88 (±0.21)a | 0.96a,b (±0.18) |