Table 3. Distribution of HI titres of positive samples for different IBV serotypes.
| No. of samples | Serotypes | Titre | GMT | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1:16 | 1:32 | 1:64 | 1:128 | 1:256 | 1:512 | 1:1024 | 1:2048 | 1:4096 | |||
| 32 | Mass | - | - | 3 | 1 | 10 | 7 | 6 | 2 | 3 | 490.5 |
| 32 | Conn | - | 4 | 8 | 4 | 6 | 2 | 4 | 2 | 2 | 215.3 |
| 32 | Ark | - | - | 2 | 1 | 12 | 5 | 4 | 6 | 2 | 534.9 |