Table 7.

Sensitivity of Enterobacteriaceae strains isolated from the cecum and cloaca of broiler chickens at d 42 to chemotherapeutic agents %.¹

	Treatments2
Agent	Control	CAM.IR	FLA.IR	SUN.IR	P-value
Cecum
Chloramphenicol (30 µg/mL)3
S	70	90	70	93
MS	13	0	30	0	0.281
R	17	10	0	7
Tetracycline (30 IU)3
S	27	17	13	17
MS	50	53	60	53	0.954
R	23	30	27	30
Trimethoprim/Sulfamethoxazole (1.25 + 23.75 µg/mL)3
S	87	0	7	7
MS	0	30	60	17	0.032
R	13	70	33	76
Streptomycin (10 IU)3
S	30	3	0	0
MS	0	10	0	0	0.327
R	70	87	100	100
Nitrofurantoin (300 IU)3
S	100	100	100	100
MS	0	0	0	0	1.000
R	0	0	0	0
Ampicillin (10 µg/mL)3
S	17	27	0	0
MS	53	50	20	70	0.093
R	30	23	80	30
Cloaca
Chloramphenicol (30 µg/mL)3
S	70	83	77	70
MS	0	17	23	27	0.079
R	30	0	0	3
Tetracycline (30 IU)3
S	26	27	50	7
MS	47	46	40	60	0.054
R	27	27	10	33
Trimethoprim/Sulfamethoxazole (1.25 + 23.75 µg/mL)3
S	90	3	13	3
MS	0	27	57	27	0.029
R	10	70	30	70
Streptomycin (10 IU)3
S	10	7	0	0
MS	10	3	0	0	0.514
R	80	90	100	100
Nitrofurantoin (300 IU)3
S	53	100	100	100
MS	47	0	0	0	0.037
R	0	0	0	0
Ampicillin (10 µg/mL)3
S	13	17	0	0
MS	77	50	23	60	0.085
R	10	33	77	40

Abbreviations: S, sensitive; MS, medium sensitive; R, resistant.

¹Data represent the mean of 5 broiler chickens per treatment.

²Control – diet without micronized oilseeds. CAM.IR – diet with 15% of micronized camelina seeds. FLA.IR - with 15% of micronized flax seeds. SUN.IR – diet with 15% of micronized sunflower seeds.

³Concentration of the chemotherapeutic on the disk.