Research Article
Protective Efficacy of an Inactive Vaccine Based on the LY02 Isolate against Acute Haemophilus parasuis Infection in Piglets
Table 3
Levels of IgG antibody in the sera of piglets from each group.
| Group | Number of animals | Levels of IgG antibody (means ± SD) at intervals (days) | 0 | 21 | 35 | 42 | 49 | 56 | 70 |
| G1 | 7 | 1.6 ± 1.2 | 1.4 ± 0.7 | 1.3 ± 0.2 | 1.1 ± 0.2 | 3.9 ± 1.8 | 5.1 ± 0.8 | 3.9 ± 0.6 | G2 | 6 | 1.9 ± 1.4 | 1.5 ± 0.4 | 1.3 ± 0.2 | 1.4 ± 0.1 | 1.5 ± 0.5 | 1.3 ± 0.2 | 1.4 ± 0.3 | G3 | 5 | 1.2 ± 0.9 | 0.9 ± 0.5 | 0.8 ± 0.1 | 0.9 ± 0.2 | 0.9 ± 0.3 | — | — |
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, compared to G3. compared to G2.
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