Comparison of PCV2 Antibodies The results show that there was no significant difference between control and experimental groups before vaccination (at 3 weeks of age), but at 8 weeks of age there was a positive trend in the experimental group (group 2) in Farms A, B and D ( Figure 1 ), while the control group (group 1) only had a slight increase in PCV2 antibody in Farm C ( Figure 1 ), and the other three farms (A, B and D) showed a downward trend ( Figure 1 ).
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Field Evaluation of a Ready-to-Use Porcine Circovirus Type 2 and <i>Mycoplasma hyopneumoniae</i> Vaccine in Naturally Infected Farms in Taiwan.
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p values < 0.05, <0.01 and 0.001 were considered statistically significant, highly significant and very highly significant, respectively. 3.