Table 7.

Intestinal morphology of pigs fed the Exp. 1 diets¹

Item	Diet2					SEM3	P value
	NC	PC	OA1	OA2	OA1 + OA2
Duodenum
VH4, µm	719b	742b	742b	856a	790ab	15.36	0.026
CD5, µm	412	341	353	359	367	11.85	0.420
VH/CD	1.83	2.25	2.15	2.45	2.23	0.08	0.240
Jejunum
VH, µm	616	621	622	650	641	9.15	0.751
CD, µm	223	240	228	258	230	5.92	0.362
VH/CD	2.77	2.69	2.75	2.56	2.82	0.06	0.758
Ileum
VH, µm	579	550	578	592	563	9.81	0.741
CD, µm	162	184	161	157	157	4.01	0.227
VH/CD	3.60	3.04	3.67	3.80	3.65	0.10	0.164

Small superscript letter are different (P < 0.05).

¹Values means n = 8 for productive performance.

²NC = negative control, no antibiotics; PC = positive control, antibiotics included; OA1 = NC plus organic acid 1; OA2 = NC plus organic acid 2; OA1 + OA2 = NC plus organic acid 1 and organic acid 2.

³Pooled SEM; n = 8/diet.

⁴VH = villus height.

⁵CD = crypt depth.