Table 2. Histopathologic lesion scores in SPF chickens after in-ovo vaccinated with NDV strain TS09-Ca.
Vaccine | Dosage (log10 EID50) | Histopathologic lesion scoreb | |||||
---|---|---|---|---|---|---|---|
5 dphc | 10 dph | 15 dph | |||||
Trachea | Intestine | Trachea | Intestine | Trachea | Intestine | ||
TS09-C | 4.0 | 1 | 4 | 0 | 3 | 0 | 0 |
3.0 | 0 | 1 | 0 | 0 | 0 | 0 | |
2.0 | 0 | 1 | 0 | 0 | 0 | 0 | |
PBS | - | 0 | 0 | 0 | 0 | 0 | 0 |
aSPF chicken embryos in each group were inoculated with the different doses of NDV strain TS09-C, or PBS in a 0.1 ml volume via the amniotic route at 18 embryo-days.
bThe sum of histopathological lesion scores of 3 chickens in each group.
cDay post-hatch.