Thirty-two H2S-positive strains of Escherichia coli, isolated from the caecal contents or mesenteric lymph nodes or both of 60 apparently healthy pigs, were characterised. Eighteen different serotypes and 18 different fermentative types were found. During conjugation with E. coli K12, four strains transferred their Hys plasmids linked to Raf, and another transferred Hys associated with the Tc determinant. All Hys-Raf plasmids belong to incompatibility group FI, whilst Tc-Hys is an Fi− plasmid.
BauerA. W.,
KirbyW. M. M.,
SherrisJ. C.,
TurckM.1966; Antibiotic susceptibility testing by a standardized single disk method. Am. J. clin. Path. 45:493
MagalhãesM.,
VérasA.1977; Properties of pPE 1572 (Hys-Raf), a plasmid governing hydrogen sulphide production and raffinose fermentation in Escherichia coli. J. gen. Microbiol. 99:445
ϕrskovI.,
ϕrskovF.1973; Plasmid-determined H2S character in Escherichia coli and its relation to plasmid-carried raffinose fermentation and tetracycline resistance characters. Examination of 32 HbS-positive strains isolated during the years 1950–1971. J. gen. Microbiol 77:487
StoleruG. U.,
GerbaudG. R.,
BouanchaudD. H.,
Le MinorL.1972; Jitude d’un plasmide transferable determinant la production d’HaS et la resistance a la tetracycline chez Escherichia coli. Annls Inst. Pasteur, Paris 123:743
VéronM.,
GasserF.1963; Sur la detection de l’hydrogene sulfure produit par certains enferobacteriacees dans les milieux dits de diagnostic rapide. Annls Inst. Pasteur, Parisy 105:524