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

No statistical difference was observed in the average body weight (mean ± standard deviation) among the 9 groups at 21 days of age which was the start of the study; Vac3FLEX/Ch3 (n = 20, 6.42 Kg ± 0.54), VacMhp/ ChMhp (n = 20, 6.41 Kg ± 0.52), VacPCV2/ChPCV2 (n = 20, 6.41 Kg ± 0.49), VacPRRS/ChPRRSV (n = 20, 6.42 Kg ± 0.45), UnVac/Ch3 (n = 10, 6.41 Kg ± 0.51), UnVac/ ChMhp (n = 10, 6.43 Kg ± 0.47), UnVac/ChPCV2 (n = 10, 6.41 Kg ± 0.45), UnVac/ChPRRSV (n = 10, 6.42 Kg ± 0.45) and UnVac/UnCh (n = 10, 6.42 Kg ± 0.49). The overall ADWG (from 21 to 84 days old) of pigs from the Vac3FLEX/Ch3, VacMhp/ChMhp, VacPCV2/ChPCV2, VacPRRS/ChPRRSV, UnVac/ChMhp, UnVac/ChPCV2, UnVac/ChPRRSV, and UnVac/UnCh groups was significantly higher (P < 0.05) when compared to the UnVac/ Ch3 group (Table 1) .