HIGHLIGHTS
SUMMARY
In the trial, nearly 100% of pigs in vaccinated groups (groups A and B) were seropositive at week 4 (2 weeks after vaccination) while the percentage of seropositive pigs dropped significantly at week 7 and by weeks 10 and 13; all pigs in the vaccinated groups become seropositive. Previous studies with an ID vaccination in suckling piglets against other respiratory pathogens (M. hyo, PCV2) reported less vaccination-associated behavior changes in ID-vaccinated suckling piglets in comparison to IM-vaccinated suckling piglets, such as more active behavior and suckling activity, fewer flight_reactions at the . . .
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