Table 3.

Mean (±standard deviation) villi height, villi area, crypt depth and villus height: crypt depth ratio of the duodenum of broilers slaughtered on day 29.

Treatment	Villi Height (µm)		Villi Area (µm)		Crypt depth (µm)		Villi height: crypt depth
	19 D	29 D	19 D	29 D	19 D	29 D	19 D	29 D
Control	275 ± 21	1522 ± 90	8332a ± 1448	215439 ± 55696	45 ± 10	240 ± 23	6.30 ± 1.20	6.40 ± 0.69
Antibiotic	275 ± 39	1496 ± 153	6810b ± 1333	214644 ± 49877	42 ± 10	232 ± 27	6.87 ± 1.78	6.53 ± 0.95
Probiotic	260 ± 20	1515 ± 170	6573b ± 1073	216848 ± 48577	40 ± 8	219 ± 21	7.32 ± 1.75	6.99 ± 0.98
p value	0.556	0.949	0.042 *	0.952	0.298	0.213	0.659	0.449

^*p < 0.05, ^{a, b}Means within columns with different superscripts differ significantly (p < 0.05).