J. Hommez et al., SUSCEPTIBILITY OF DIFFERENT SERPULINA SPECIES IN PIGS TO ANTIMICROBIAL AGENTS, Vlaams dierengeneeskundig tijdschrift, 67(1), 1998, pp. 32-35
Five reference Serpulina strains, 36 Serpulina hyodysenteriae field st
rains and 17 field strains identified as Serpulina innocens, S. murdoc
hii, Serpulina pilosicoli and Serpulina intermedia were tested for sen
sitivity to seven antibacterial agents. Lowered susceptibility to tiam
ulin was seen in some S. hyodysenteriae strains from farms in which in
sufficient therapeutic results were obtained with this antibiotic. The
susceptibility levels of carbadox, gentamicin, dimetridazole and sali
nomycin were distributed normally. S. intermedia strains tended to be
more susceptible to dimetridazole than the S. hyodysenteriae strains.
The susceptibility levels of the other species did not differ from tho
se of S. hyodysenteriae. Nearly all strains showed acquired resistance
to tylosin and to a lesser degree also to lincomycin. Only two field
strains and three of the five reference strains were an exception to t
his.