. 2023 Sep 6;102(12):103091. doi: 10.1016/j.psj.2023.103091

Table 3.

Distribution of β-lactam resistant E. coli in 5 integrated broiler chicken operations.

Integrated broiler chicken operation (no. of farms)	No. (%) of farms with β-lactam resistant E. coli
	Dust	Feces
A (15)	6 (40.0)^b_B	15 (100.0)_A
B (20)	18 (90.0)^a	19 (95.0)
C (15)	11 (73.3)^a,b	13 (86.7)
D (14)	7 (50.0)^a,b_B	14 (100.0)_A
E (10)	3 (30.0)^b_B	9 (90.0)_A
Total (74)	45 (60.8)_B	70 (94.6)_A

Values with different lowercase superscript letters (ab) represent significant difference among operations, while different uppercase subscript letters (AB) represent significant difference in the row (P < 0.05).