In vitro synergistic potentials of novel antibacterial combination therapies against Salmonella enterica serovar Typhimurium

Table 3 Effect of ceftiofur-gallic acid combination on the swimming and swarming motilities of Salmonella enterica serovar Typhimurium (ATCC14028)

Treatment Groups	Swarming (mm) (mean ± SD)	Swimming (mm) (mean ± SD)
Control	9.67 ± 2.08^a	26.67 ± 2.52^a
Ceftiofur (1 × MIC)	2.00 ± 1.00^d	5.33 ± 2.31^c
Gallic acid (1 × MIC)	6.33 ± 1.15^b	7.00 ± 1.00^b
Ceftiofur (1 × MIC) + Gallic acid (1 × MIC)	1.33 ± 0.58^e	0.00 ± 0.00
Ceftiofur (½ × MIC) + Gallic acid (½ × MIC)	3.33 ± 1.15^c	2.33 ± 1.53^d

MIC: minimum inhibitory concentration. Different superscript letters (a, b, c, d and e) indicate statistical significance (p < 0.05) among different sample groups. Results are interpreted from 3 independent experiments

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