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Serum antibody levels of H9N2 AIV at various stages.
| Stage | Control group | ABG | ABP1 | ABP2 |
|---|---|---|---|---|
| 21 d | 6.11 ± 0.11 | 6.11 ± 0.16 | 6.06 ± 0.18 | 6.22 ± 0.22 |
| 40 d | 4.77 ± 0.18a | 4.55 ± 0.39a | 6.67 ± 0.21b | 6.78 ± 0.07b |
a,bIn the same line, the same letter superscripts mean no significant difference (P > 0.05), and the different letter superscripts mean significant difference (P < 0.05).
Abbreviations: ABG, antibiotic group; ABP1, antibacterial peptide group 1; ABP2, antibacterial peptide group 2.
