Impact of a porcine epidemic diarrhea outbreak on swine productivity in Japan: a retrospective cohort study

YAMANE, Itsuro; YAMAZAKI, Hisanori; ISHIZEKI, Sayoko; WATANABE, Yugo; OKUMURA, Hanako; OKUBO, Mitsuharu; KURE, Katsumasa; HAYAKAWA, Yuiko; FURUKAWA, Makoto; OOI, Munetaka; MIZUKAMI, Yoshihiro; ITO, Mitsugu

During the PED epidemic, L-PED-positive herds had significantly higher PRWM and POWM than the PED-negative herds, but no significant difference was observed between the S-PED group and the other groups ( Figs. 1 and 2) . The L-PED-positive and S-PED-positive herds had significantly lower PWL than the PED-negative herds during the PED epidemics (Fig. 3) . No significant difference was observed in PBA or LMFY among the groups during the study period (Figs. 4 and 5). During October-December 2014, the L-PED-positive herds had significantly fewer MP than the PED-negative herds, whereas the S-PED-positive herds did not differ significantly from the other groups (Fig. 6) .