Table 1 Groups of chickens and dosages of recombinant chIL-7 and inactivated IBDV vaccine used in immunization
Groups | Number of birds | chIL-7 doses (µg) | Inactivated IBDV vaccine (105 ELD50/0.2 mL) (mL) |
|---|---|---|---|
1 | 48 | – | – |
2 | 48 | 0 | 0.25 |
3 | 48 | 50 | 0.25 |
4 | 48 | 100 | 0.25 |
5 | 48 | 200 | 0.25 |