From: Effect of challenge of pigs previously immunised with inactivated vaccines containing homologous and heterologous Mycoplasma hyopneumoniae strains
Group
Number of pigs
Strain used in bacterin
Challenge infection at D56
Necropsy at D84
A
14
F7.2C
+
B
F20.1L
C
B2V1W20 1A-F
D
J strain
E
placeboa
F
8
placebo a
- b