Fig. 3From: 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 sowsMDA decay (as difference of Log least square mean [± SD] PCV-2 titres from 3 to 21 days of age) per vaccination regime of the sow within each country. Different letters mean p < 0.05 among different vaccination regimen in a countryBack to article page