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. 2020 Nov 27;4(4):txaa211. doi: 10.1093/tas/txaa211

Table 7.

Antibiotic resistant and susceptibility of E. coli isolated in feces of growing–finishing pigs

Resistant Highly susceptible
Antibiotic Treatment Growing Finishing Growing Finishing
Colistin (10 µg) Control 100 100 0 0
AGP 87.5 100 0
Selacid GG 100 100 0 0
P-value 0.581
Amox-colistin (10/10 µg) Control 100 100 0 0
AGP 100 100 0 0
Selacid GG 85.7 100 0 0
P-value 0.489
Amoxicillin/clavulanic acid (20/10 µg) Control 12.5b 37.5a 12.5a 0
AGP 37.5a 50a 0b 0
Selacid GG 0c 0b 14.3a 0
P-value <0.0001 <0.0001 0.001
Pen-strep (15/15 µg) Control 75 87.5 0 0
AGP 87.5 87.5 0 0
Selacid GG 85.7 100 0 0
P-value 0.576 0.567
Flo-doxy (40/20 µg) Control 62.5a 62.5ab 0 0
AGP 25b 75.0a 0 0
Selacid 42.9a 42.9b 0 0
P-value <0.0001 0.013
Flumequin (30 µg) Control 50 75 0 0b
AGP 37.5 62.5 0 0b
Selacid GG 42.9 57.1 0 14.3a
P-value 0.405 0.273 <0.0001
Cefotaxime (30 µg) Control 0b 25a 37.5c 12.5b
AGP 25a 25a 12.5b 0c
Selacid GG 0b 0b 57.1a 28.6a
P-value <0.0001 <0.0001 <0.0001 <0.0001
Ceftiofur (30 µg) Control 12.5b 50a 0b 0
AGP 50a 62.5a 12.5a 0
Selacid 14.3b 28.6b 14.3a 0
P-value <0.0001 0.002 0.001
Ciprofloxacin (5 µg) Control 25 62.5 12.5a 12.5a
AGP 25 50 0b 12.5a
Selacid GG 14.3 57.1 14.3a 0b
P-value 0.169 0.499 0.001 0.002
Norfloxacin (10 µg) Control 12.5 62.5ab 0b 0b
AGP 12.5 75.0a 0b 12.5a
Selacid GG 14.3 42.9b 14.3a 0b
P-value 0.921 0.013 <0.0001 <0.0001
Enrofloxacin (5 µg) Control 37.5 50 12.5a 12.5
AGP 25 62.5 12.5a 12.5
Selacid GG 28.6 57.1 0b 14.3
P-value 0.256 0.499 0.002 0.921

More data on Low Susceptible and Intermediate Susceptible of E. coli isolated in feces of growing and finishing pigs are presented in supplementary Appendix Table 1 and 2.

a,bValues in a column with no common superscripts differ significantly (P ≤ 0.05).