Table 1.

Volatile fatty acid (VFA) and enzyme activities of ileal contents at different ages in grazing kids.

Item	Age (d)					SEM	P-value
	01	71	28	42	70		L	Q
Acetate, mmol	-	-	3.39	4.05	3.52	0.54	1.000	0.384
Amylase, U2	-	-	1.13	2.03	0.59	0.03	<0.001	<0.001
CMCase, U	-	-	0.08	0.10	0.10	0.02	0.317	0.429
Xylanase, U	-	-	0.18	0.29	0.27	0.02	0.008	0.002

¹The values for acetate and enzyme activities at days 0 and 7 were not presented for the reason that they were not detected due to insufficient sample amount.

²For enzyme activities, amylase, CMCase and xylanase activities were expressed as the amount of enzyme required to release 1 μmol of reducing sugars (xylose or glucose equivalent) per min per g of intestinal wet content.