Table 8.

The apparent total tract digestibility of dry matter (DM), crude protein (CP), acid-hydrolyzed ether extract (AEE), neutral detergent fiber (NDF), and acid detergent fiber (ADF) of each experimental diet (%)¹

Item	Inclusion level (%)						SEM	p-value
	0	2	4	6	8	10		Level	Source	Interaction
DM
Soybean oil2	88.75	88.22	88.72	89.12	89.66	90.34	0.212	0.001	0.082	0.829
Palm oil3	88.75	88.12	88.46	88.86	88.95	89.44	0.154
GE
Soybean oil2	88.35	88.01	88.56	89.13	89.84	90.45	0.235	0.002	0.003	0.308
Palm oil	88.35	87.92	88.13	88.51	88.46	88.81	0.154
CP
Soybean oil	87.80	87.44	87.62	87.96	88.64	89.17	0.244	0.169	0.280	0.873
Palm oil	87.80	87.34	87.57	87.81	88.03	88.14	0.178
AEE
Soybean oil2,3	59.45	72.54	78.54	82.44	86.02	88.38	1.710	< 0.001	< 0.001	0.067
Palm oil2	59.45	72.29	77.81	80.46	82.77	83.38	1.458
NDF
Soybean oil	52.25	46.53	52.34	52.41	53.08	52.71	0.906	0.141	0.113	0.983
Palm oil	52.25	49.75	53.20	55.89	55.30	55.67	0.985
ADF
Soybean oil	49.27	44.51	52.91	49.83	50.88	50.59	1.178	0.607	0.062	0.592
Palm oil	49.27	52.42	51.27	53.61	53.54	57.23	1.268

SEM, standard error of the mean; GE, gross energy; CP, crude protein.

¹n = 6 per mean.

²Linear effect of inclusion level at p<0.05.

³Quadratic effect of inclusion level at p<0.05.