Table 2

Results (mean ± SD) of the different parameters.

Parameter

Treatment group


A

B

C

D

E

F


RDS

0.29 ± 0.09a,b,c

0.50 ± 0.21a,b

0.53 ± 0.25a,b

0.18 ± 0.14,a,c

0.61 ± 0.32b

0.00 ± 0.00c

Macroscopic lung lesions

6.86 ± 4.54a

2.59 ± 1.39b,c

3.33 ± 0.97b,c

4.59 ± 2.82a,b,c

4.06 ± 2.45a,b

0.23 ± 0.35c

Histopathological lung lesions

3.49 ± 0.67a

3.48 ± 0.65a

2.89 ± 0.74a

2.93 ± 0.76a

3.45 ± 0.73a

1.29 ± 0.30a

IF

1.63 ± 0.97a,b

0.91 ± 0.86a,c

1.27 ± 0.21a,b,c

1.77 ± 0.70a,b

2.23 ± 1.05b

0.14 ± 0.38c


Respiratory disease score (RDS), macroscopic and histopathological lung lesions, and immunofluorescence (IF) scores for M. hyopneumoniae in the lung tissue in the different groups (Groups A-E: n = 14 pigs per group; group F: n = 8 pigs)

Group A (F7.2C), B (F20.1L), C (B2V1W20 1A-F), D (J strain), E (positive control; non-vaccinated, challenge infected), F (negative control; non-vaccinated, non-challenged).

Within a row, different superscript letters correspond to significant differences between the groups (P < 0.05)

Villarreal et al. BMC Veterinary Research 2012 8:2   doi:10.1186/1746-6148-8-2

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