Table 1.
Overview of gross pathology and bacteriology at the time of euthanasia.
| Infected (n = 14a) |
Control (n = 15) |
|||||||
|---|---|---|---|---|---|---|---|---|
| Gross pathology | Microbiology | Gross pathology | Microbiology | |||||
| Airways | Systemic | Airways | Systemic | Airways | Systemic | Airways | Systemic | |
| 2 dpi | 5/5b | 2/5 | 5/5 | 2/5 | 1/5 | 0/5 | 2/5c | 0/5 |
| 4 dpi | 3/5 | 1/5 | 5/5 | 3/5 | 0/5 | 0/5 | 3/5c | 1/5c |
| 6-7d dpi | 4/4 | 2/4 | 3/4 | 0/4 | 0/5 | 0/5 | 0/5 | 0/5 |
dpi: days post-infection, n number.
aOne animal was euthanised preterm due to animal welfare concerns.
bAt 2 days post-infection (dpi), lesions were evident in the airways of five out of five euthanised animals.
cBacterial growth (sparse) consisting of mixed cultures.
dAll infected birds were euthanised by the end of 6 dpi due to mild clinical signs.