Table 4.

Jejunal morphology and crypt cells proliferation of weaned pigs fed diets with increasing levels of nucleotides (NUC) on day 21

Item							P-value
	Nucleotides1, mg/kg						NUC		0 vs.
	0	50	150	250	500	SEM	Linear	Quadratic	NUC	50 + 150
Jejunum
Villus height, μm	474	462	525	511	469	36	0.993	0.137	0.622	0.602
Villus width, μm	98	100	97	101	103	4	0.298	0.874	0.532	0.882
Crypt depth, μm	263	245	262	261	258	13	0.830	0.816	0.628	0.494
VH:CD2	2.00	2.11	2.21	2.17	2.01	0.09	0.712	0.024	0.144	0.140
Crypt proliferation, %	20.0	19.8	18.7	19.6	17.1	1.1	0.032	0.602	0.265	0.476

¹Nucleotides were extracted from yeast cell and provided from Hinabiotech (Guangzhou, China).

²Villus height to crypt depth ratio.