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Table 6 Antimicrobial resistance genes of the Salmonella isolates

From: Serotype distribution, antimicrobial susceptibility, antimicrobial resistance genes and virulence genes of Salmonella isolated from a pig slaughterhouse in Yangzhou, China

Drug classes Resistance genes Number of isolates Positive rates (%)
Quinolones
40.00%
qnrA 0 0.00
qnrB 1 1.25
qnrC 0 0.00
qnrD 0 0.00
qnrS 5 6.25
qepA 4 5.00
oqxA 14 17.50
oqxB 9 11.25
Aminoglycosides
51.25%
aac(6′)-Ib 16 20.00
aadA1 33 41.25
Sulfonamides
27.50%
sul1 8 10.00
sul2 21 26.25
β-lactamase
43.75%
blaOXA-1 9 11.25
blaPSE-1 8 10.00
blaTEM 20 25.00
blaCMY-2 1 1.25
Tetracyclines
73.75%
tetA 51 63.75
tetB 6 7.50
tetG 6 7.50
Chloramphenicols
60.00%
catA1 38 47.50
floR 22 27.50
Trimethoprim
15.00%
dfrA1 12 15.00