. 2021 Jun 23;7(3):737–749. doi: 10.1016/j.aninu.2020.11.018

Table 6.

Intestinal morphology of weaned piglets as affected by dietary mixed organic acids (MOA) and antibiotic growth promoter (AGP) supplementation.

Item	Dietary treatments¹					SEM	P-value
Item	CON	AGP	OA1	OA2	OA3	SEM	P-value
Duodenum
Villus height, μm	302.56	301.65	300.41	306.56	292.20	3.25	0.11
Crypt depth, μm	204.89^ab	194.61^b	187.95^b	222.59^a	216.83^a	4.33	<0.01
Villus height:crypt depth ratio	1.48^ab	1.55^a	1.60^a	1.38^bc	1.35^bc	0.03	<0.01
Jejunum
Villus height, μm	283.01^b	311.15^ab	347.42^a	326.06^ab	275.2^b	12.07	0.01
Crypt depth, μm	198.69	191.48	183.32	198.69	189.21	7.89	0.72
Villus height:crypt depth ratio	1.46^d	1.62^bc	1.90^a	1.64^b	1.45^d	0.03	<0.01
Ileum
Villus height, μm	249.02	223.40	259.09	242.16	218.26	15.08	0.35
Crypt depth, μm	183.69	149.69	160.65	165.81	163.30	10.25	0.31
Villus height:crypt depth ratio	1.36^cd	1.49^b	1.61^a	1.46^bc	1.34^d	0.02	<0.01

^{a, b, c, d} Different letters within a row mean a statistical difference (P < 0.05).

CON: control; AGP: chlorinomycin at 75 mg/kg + virginiamycin at 15 mg/kg + guitaromycin at 50 mg/kg; OA1: MOA at 3,000 mg/kg; OA2: MOA at 5,000 mg/kg; OA3: MOA at 7,000 mg/kg.