Table 3 P-values of the effects 'PPDS-status' and 'mammary gland location' on the occurrence of different bacteria species in samples from PPDS-affected and non-affected sows (n = 112)

E. coli

0.13

0.13

Staph. aureus

0.18

0.02

Staph. hyicus

0.33

0.01

Staph. spp.*

0.04

0.14

Enterococcus spp.

0.16

0.15

Klebsiella spp.

0.23

0.51

others*

0.18

0.19