Table 6.

Effects of dietary Moutan cortex radicis on the morphology of the jejunum and ileum of growing pigs.

Items	Diets1				P-value	Regression analysis
	CON	LMC	MMC	HMC		Liner effect	Quadratic effect
Jejunum
Villus height, μm	370.13 ± 9.21b	382.23 ± 9.92b	372.27 ± 8.58b	340.50 ± 7.89a	<0.01	0.013	<0.01
Crypt depth, μm	200.39 ± 7.01b	189.56 ± 6.53ab	225.77 ± 6.44c	175.80 ± 5.47a	<0.01	0.025	<0.01
Villus height/Crypt depth	2.00 ± 0.09ab	2.26 ± 0.11b	1.7 ± 0.08a	2.06 ± 0.08ab	<0.01	0.957	0.829
Ileum
Villus height, μm	312.28 ± 8.34a	358.50 ± 5.29b	343.82 ± 14.67b	323.20 ± 7.46a	<0.01	0.065	<0.01
Crypt depth, μm	174.49 ± 6.20a	212.31 ± 4.63b	206.47 ± 5.68b	185.63 ± 5.19a	<0.01	0.174	<0.01
Villus height/Crypt depth	1.77 ± 0.05	1.78 ± 0.04	1.82 ± 0.04	1.84 ± 0.05	0.746	0.648	0.410

¹CON, control group, basal diet without antibiotics; LMC, the control diet + 2,000 mg/kg Moutan cortex radicis; MMC, the control diet + 4,000 mg/kg Moutan cortex radicis; HMC, the control diet + 8,000 mg/kg Moutan cortex radicis.

Data are expressed as means ± SEM (n = 8). Means within a row with different superscripts are significantly different (P < 0.05).