Fig. 3. Immunological responses against PCV2 and MHP. (A) Mean values of the anti-PCV2 IgG levels. (B) Mean values of the anti-MHP IgG levels in the different groups.

PCV2, porcine circovirus type 2; MHP, Mycoplasma hyopneumoniae; IgG, immunoglobulin G; PCV2d, porcine circovirus type 2d; G1, Myco-X PCV2d challenge (Myco-X-vaccinated); G2, Myco-XD PCV2d challenge (Myco-XD-vaccinated); 2dC, PCV2d challenge control (unvaccinated challenged); NC, negative control (unvaccinated unchallenged).

^a,bDifferent letters indicate a significant difference (p < 0.05) between groups.