Table 2

Number of pigs with serum antibodies against M. hyopneumoniae (IDEXX M. hyo Elisa) and average (± SEM) S/P ratio at 0, 2, 4, 6 and 8 weeks post-inoculation (PI) in the different groups

Weeks PI

0

2

4

6

8


Control

0/10

0/10

0/10

0/5

0/5

0.05 ± 0.02a

0.00 ± 0.02a

0.12 ± 0.05a

0.13 ± 0.09a

0.13 ± 0.06a

nvLV

0/20

1/20

14/20

8/10

8/10

0.12 ± 0.03a

0.12 ± 0.04a

0.38 ± 0.07a, b

0.59 ± 0.12a, b

0.59 ± 0.12a

nvHV

0/20

2/20

20/20

10/10

10/10

0.15 ± 0.04a

0.12 ± 0.04a

0.61 ± 0.06b

0.68 ± 0.10b

0.67 ± 0.14a

vLV

19/20

19/20

19/10

10/10

10/10

0.45 ± 0.06b

0.84 ± 0.06b

1.11 ± 0.08c

1.20 ± 0.10c

1.24 ± 0.11b

vHV

17/20

20/20

20/20

20/20

20/20

0.46 ± 0.05b

0.86 ± 0.06b

1.14 ± 0.09c

1.24 ± 0.09c

1.26 ± 0.09b


nv non-vaccinated; v vaccinated; LV low virulent challenge strain; HV high virulent challenge strain

Different lowercase letters correspond to significantly different values between the groups at one time point Pigs were vaccinated three weeks before inoculation

Vranckx et al. BMC Veterinary Research 2012 8:24   doi:10.1186/1746-6148-8-24

Open Data