Table 1 Clinical signs, mortality and MDT of the different chicken breeds challenged with H7N1 or H5N8 HPAIVs.
Virus | Parameter | Empordanesa | Penedesenca | C. Prat | F. Ametller | C. Negra | E. Oiloa | 308 Ross Broiler | SPF White Leghorn | Mean |
|---|---|---|---|---|---|---|---|---|---|---|
H7N1 | Percentage of dead birds | 93 | 100 | 100 | 80 | 25 | 73 | 46 | 40 | 70 |
Mean death time (dpi) | 3.3 | 4.2 | 3.3 | 3.3 | 2.7 | 3 | 3 | 3.8 | 3.3 | |
Clinical signs (%) | ||||||||||
Severe apathy | 93 | 73 | 67 | 40 | 15 | 67 | 31 | 40 | 55 | |
Cutaneous edema/cyanosis | 7 | 20 | 7 | 0 | 0 | 0 | 0 | 7 | 5 | |
Nervous signs | 0 | 7 | 20 | 0 | 8 | 20 | 8 | 0 | 8 | |
H5N8 | Percentage of dead birds | 33 | 76 | 85 | 73 | 25 | 50 | 25 | 8 | 47 |
Mean death time (dpi) | 4.2 | 7.9 | 5.8 | 5.7 | 2.7 | 2.8 | 3.7 | 6 | 4.9 | |
Clinical signs (%) | ||||||||||
Severe apathy | 7 | 40 | 40 | 53 | 23 | 40 | 8 | 67 | 35 | |
Cutaneous edema/cyanosis | 0 | 7 | 7 | 7 | 0 | 0 | 0 | 8 | 4 | |
Nervous signs | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | |