Table 4.
The titer of HI antibody of all birds immunized with different vaccines using the LaSota antigen
| Number of chicken | Mean value | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
| Oil- TC/1 | 6a | 8 | 7 | 6 | 8 | 8 | 8 | 8 | 7 | 6 | 6 | 7 | 7.1 |
| Oil-Las | 7 | 7 | 6 | 9 | 8 | 7 | 7 | 7 | 6 | 7 | 9 | 6 | 7.2 |
| Live-Las | 7 | 7 | 7 | 8 | 7 | 8 | 6 | 7 | 6 | 6 | 7 | 8 | 7.0 |
| Oil-TC/1 plus Live-Las | 8 | 8 | 8 | 9 | 8 | 10 | 8 | 7 | 8 | 6 | 8 | 9 | 8.1 |
| Oil-Las plus Live-Las | 8 | 8 | 9 | 10 | 8 | 10 | 8 | 9 | 8 | 8 | 9 | 8 | 8.7 |
| Un-inoculated control | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Negative control | 0 | 0 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | 0 |
aThe titer of HI antibody was expressed on a log 2 scale. All chickens (n = 6) in the negative control group had no clinical signs during the course of the experiment