Table 6.

Enzyme activity of weaned piglets with different VA concentrations in intestinal mucosa¹

	Dietary VA, mg/kg						Contrast, P <
Items	2	4	8	16	SEM	Model P value	Linear	Quadratic
Jejunal mucosa
Maltase	196.36	244.60	164.73	212.61	20.640	0.604	0.870	0.997
Sucrase	59.69	98.36	68.37	49.74	7.631	0.124	0.365	0.058
Lactase	18.76	31.95	31.40	29.74	3.762	0.243	0.361	0.343
Alkaline phosphatase	467.34	417.14	389.76	424.68	41.149	0.523	0.686	0.625
Ileal mucosa
Maltase	136.08	231.58	104.94	262.62	22.734	0.032	0.179	0.455
Sucrase	35.84	55.47	16.73	34.55	4.843	0.041	0.282	0.919
Alkaline phosphatase	284.43	293.01	174.86	123.21	29.394	0.028	0.024	0.593

¹Values are expressed as mean ± SEM, n = 8.