Fig. 2From: Descriptive analyses of maternally-derived antibody levels against porcine circovirus 2 (PCV-2) in 3- and 21-day-old piglets from farms of four European countries using different vaccination protocols in sowsLog least square mean [± SD] of PCV-2 titres at 3 (A)- and 21 (B)-day-old piglets per vaccination regimen of the sow and country. Different letters mean p < 0.05 between treatments within a countryBack to article page