Table 8.

Ileal morphology of broiler chickens fed with oxidized oil and quercetin on day 11.

Item	Treatment1						P-value, t-test	Linear	Quadratic	P-value
	Ctr	Ox	OxL	OxM	OxH	SEM
Villus height, μm	383.82	376.83	343.3	389.9	390.14	8.426	0.785	0.329	0.699	0.316
Crypt depth, μm	77.53	68.78b	84.63a	77.59a,b	70.58b	1.970	0.152	0.649	0.022	0.045
V/C2	5.08	5.52∗,a	4.24b	5.14a	5.58a	0.113	0.019	0.119	0.003	<0.001
Number of neutral mucus goblet/(mm2)	1,959	1,832	1,727	1,622	1,470	52.9	0.475	0.015	0.822	0.103
Number of acidic mucus goblet/(mm2)	1,917	171	1,738	1,439	1,401	60.9	0.368	0.043	0.726	0.137

∗Means were significantly different compared with the control. Means within 4 treatments (Ox, OxL, OxM, and OxH) lacking a common superscript differ (P < 0.05).

Abbreviation: Ctr, control group.

¹Ctr: basal diet; Ox: basal diet with oxidized oil; OxL: basal diet supplemented with oxidized oil and 200 ppm of quercetin; OxM: basal diet supplemented with oxidized oil and 400 ppm of quercetin; OxH: basal diet supplemented with oxidized oil and 800 ppm of quercetin.

²V/C: (villus height)/(crypt depth), μm/μm.