Evaluation of the efficacy of a trivalent vaccine mixture against a triple challenge with Mycoplasma hyopneumoniae, PCV2, and PRRSV and the efficacy comparison of the respective monovalent vaccines against a single challenge

Oh, Taehwan; Park, Kee Hwan; Yang, Siyeon; Jeong, Jiwoon; Kang, Ikjae; Park, Changhoon; Chae, Chanhee

The Vac3FLEX/Ch3, VacPRRS/ChPRRSV, and UnVac/ ChPRRSV groups had significantly lower (P < 0.05) macroscopic lung lesion scores, microscopic mycoplasmal and interstitial lung lesion scores compared to the UnVac/Ch3 group at 28 dpc. The VacPRRS/ChPRRSV group had significantly lower (P < 0.05) macroscopic lung lesion scores and microscopic interstitial lung lesion scores compared to the UnVac/ChPRRSV group at 28 dpc. There were no Different letters mean statistically significant differences within 5 groups (P < 0.05) macroscopic and microscopic lung lesions observed in pigs from the UnVac/UnCh group (Table 2 ).