Table 2.

Number of E. coli strains isolated resistant to the different number of antibiotics tested according to the sampling moment in fast-growing and slow-growing breeds.

Breed	Sampling moment	Number of AMR to the indicated number of antibiotics
		0	1	2	3	4	5	6	7	8	9	10	Total
Fast-growing breed	Beginning	0	1	2	3	1	3	1	0	1	0	0	12
	Mid-period	0	3	7	6	11	13	0	2	0	0	1	43
	End	2	8	9	4	9	9	2	1	1	0	0	45
	Total	2	12	18	13	21	25	3	3	2	0	1	100
Slow-growing breed	Beginning	4	7	0	0	0	0	0	0	0	0	0	11
	Mid-period	2	10	7	3	6	4	2	1	0	0	0	35
	End	2	8	6	18	12	3	1	2	0	1	0	53
	Total	8	25	13	21	18	7	3	3	0	1	0	99

Abbreviation: AMR, antimicrobial resistance.

Bold values indicate E. coli strains isolated resistant to the different number of antibiotics.