Antimicrobial Resistance Profiles of Escherichia coli Isolated from Broiler and Layer Chickens in Arusha and Mwanza, Tanzania

Table 3

Prevalence of resistance to selected antimicrobial agents among Escherichia coli isolates obtained from broiler and layer chickens in Arusha and Mwanza by chicken type.

Sn	Antimicrobial agent	Proportion of resistance n (%)		value
		Broiler (n = 103)	Layer (n = 101)
1	Ertapenem	32 (15.7)	30 (14.7)	0.832
2	Chloramphenicol	58 (28.4)	52 (25.5)	0.489
3	Ceftriaxone	53 (26.0)	21 (20.6)	0.158
4	Ciprofloxacin	71 (34.8)	69 (33.8)	0.925
5	Ampicillin	103 (50.5)	101 (49.5)	—
6	Trimethoprim/sulfamethoxazole	96 (47.1)	86 (42.2)	0.064
7	Gentamicin	13 (6.4)	8 (3.9)	0.269

Key: Sn = serial number.