Table 5.

Effects of organic acids and phytase supplementation on histomorphology of ileum of broiler chicken at 42^nd day

Treatments		Villus height (µm)	Villus width ( µm)	Crypt depth (µm)	Epithelium thickness (µm)	Number of Goblet cells	Villus height / Crypt depth ratio
Vinegar (%)	0.00	892	154	136	232	1194b	6.55
	2.00	908	158	142	231	1264a	6.39
Citric acid (%)	0.00	914	156	140	229	1226	6.52
	2.00	886	157	138	234	1231	6.42
Phytase (FTU)	0.00	908	157	141	234	1208	6.43
	500	892	155	138	230	1250	6.46
Standard Error		9.00	2.60	2.60	2.00	19.00	0.13
p-value
Vinegar		0.26	0.30	0.13	0.84	0.01	0.36
Citric acid		0.06	0.84	0.56	0.10	0.85	0.57
Phytase		0.25	0.55	0.43	0.23	0.13	0.93
Vinegar × Citric		0.04	0.34	0.34	0.00	0.42	0.04
Vinegar × Phytase		0.70	0.04	0.06	0.43	0.28	0.05
Citric × Phytase		0.31	0.94	0.62	0.76	0.36	0.95
Vinegar × Citric × Phytase		0.19	0.07	0.07	0.07	0.38	0.05

^ab Different superscript letters within a column indicate significant differences at p ˂ 0 .05.