Table 3.

Comparison of antimicrobial resistance phenotype with corresponding resistance genes detected

Resistance phenotype [no. (%) of isolates resistant to the indicated antimicrobial(s)]	Resistance genotype [no. (%) of resistant isolates with the indicated genes]				Phenotypic-genotypic agreementa
Chloramphenicol [2 (2.6)]	floR [2 (100)]	cat1 [0 (0.0)]	cat2 [0 (0.0)]		100
Tetracycline [25 (32.1)]	tetA [4 (16.0)]	tetB [22 (80.0)]	tetC [1 (4.0)]	NDb [1 (4.0)]	96
Ceftiofur [8 (10.3)]	blaCMY [7 (87.5)]	blaDHA-1 [2 (25.0)]	ND [1 (12.5)]		87.5
Cefoxitin [7 (9.0)]	blaCMY [7 (100)]	blaDHA-1 [2 (77.8)]			100
Ampicillin [20 (25.6)]	blaCMY [8 (40.0)]	blaDHA-1 [3 (15.0)]	blaTEM [12 (60.0)]	ND [1 (5.0)]	95
Amoxicillin/clavulanate [9 (11.5)]	blaCMY [8 (88.9)]	blaDHA-1 [3 (33.3)]	blaTEM [2 (22.2)]		100
Gentamicin [8 (10.3)]	aadB [0 (0.0)]	aacC [7 (87.5)]	ND [1 (12.5)]		87.5
Kanamycin [18 (23.1)]	Kn [17 (94.4)]	aphAI-IAB [1 (5.6)]			100
Streptomycin [22 (28.2)]	aadA1 [7 (28.2)]	aadA2 [1 (4.5)]	strA [22 (100)]	strB [8 (36.4)]	100
Sulfonamides [9 (11.5)]	sul1 [6 (31.8)]	sul2 [4 (44.4)]	sul3 [1 (11.1)]		100
Trimethoprim/sulfamethoxazole [1 (1.3)]	dhfrI [0 (0.0)]	dhfrXII [0 (0.0)]	ND [1 (100)]		0.0
Total					96.1

^aPercentages of isolates with a resistance phenotype that had at least one corresponding resistance gene present.

^bND, isolate with a resistance phenotype for which a corresponding resistance gene was not detected.