In Vitro and In Vivo Comparison of Changes in Antibiotics Susceptibility of E. coli and Chicken’s Intestinal Flora after Exposure to Amoxicillin or Thymol

Table 6

Summary of antibiotics and thymol minimal inhibitory concentration (MIC) values in E. coli isolates from feces sample.

		MIC in μg/mL
		Day 7 (before treatment)	Day 14	Day 21
Group 1 (Amox)	Amoxicillin	0.8	3.2	12.8
	Colistin	0.16	1.28	2.56
	Tylosin	1.6	6.4	25.6
	Thymol	250	250	250
Group 2 (NP)	Amoxicillin	0.8	1.6	1.6
	Colistin	0.16	0.16	0.64
	Tylosin	0.8	0.8	1.6
	Thymol	250	250	250
Group 3 (control)	Amoxicillin	0.8	0.8	1.6
	Colistin	0.16	0.64	1.28
	Tylosin	0.8	1.6	3.2
	Thymol	250	250	250