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Experimental design
| Group | No. of birds | LPAIV subtype at inoculation: |
||
|---|---|---|---|---|
| I (6 July 2012, 2 mo of age) | II (3 August 2012, 3 mo of age) | III (15 July 2013, 14 mo of age) | ||
| 1 | 6 | H13 | H16 | H16 |
| 2 | 6 | H16 | H16 | H16 |
| 3 | 6 | Sham | H16 | H16 |
| 4 | 6 | Sham | Sham | H16 |
| 5 | 6 | H16 | H13 | H13 |
| 6 | 6 | H13 | H13 | H13 |
| 7 | 6 | Sham | H13 | H13 |
| 8 | 6 | Sham | Sham | H13 |
