Table 4. The influence of nutrient densities and starch to lipid ratios on apparent digestibility coefficients of starch and protein (N) in distal jejunum and distal ileum at 27 days post-hatch.

Treatment	Nutrient density	Starch:lipid ratios	Protein (N) digestibilities		Starch digestibilities		Protein (N) disappearance rate (g/bird/day)		Starch disappearance rate (g/bird/day)
			Jejunum	Ileum	Jejunum	Ileum	Jejunum	Ileum	Jejunum	Ileum
1	Low	14	0.719	0.844	0.957	0.981a	16.2	19.0	42.2	43.0
2	Low	12	0.700	0.839	0.920	0.974ab	16.8	20.1	36.1	38.2
3	Low	7	0.683	0.829	0.961	0.941d	15.1	18.3	32.7	32.9
4	Low	4	0.730	0.813	0.953	0.977a	14.4	16.0	27.6	28.3
5	Medium	14	0.757	0.871	0.971	0.985a	16.9	19.5	43.5	44.2
6	Medium	12	0.749	0.854	0.927	0.978a	17.2	19.5	39.2	41.3
7	Medium	7	0.722	0.838	0.948	0.965bc	16.1	18.6	36.6	37.3
8	Medium	4	0.724	0.831	0.943	0.977a	15.2	17.5	29.1	30.1
9	High	14	0.774	0.874	0.973	0.980a	18.3	20.6	44.4	44.8
10	High	12	0.796	0.875	0.954	0.979a	18.9	20.8	41.5	42.6
11	High	7	0.782	0.875	0.959	0.983a	17.5	19.5	39.3	40.3
12	High	4	0.792	0.867	0.941	0.960c	18.3	20.1	31.2	31.9
		SEM	0.0218	0.0086	0.013	0.0043	0.70	0.65	1.30	1.30
Main effect: Nutrient density
Low			0.708b	0.831c	0.946	0.969	15.6b	18.4b	34.6c	35.6b
Medium			0.738b	0.848b	0.947	0.976	16.3b	18.8b	37.1b	38.2a
High			0.786a	0.873a	0.956	0.976	18.3a	20.3a	39.1a	39.9a
Starch:lipid ratios
14			0.750	0.863a	0.967a	0.972	17.1ab	17.9c	43.4a	44.0a
12			0.748	0.856a	0.934b	0.977	17.6a	18.8bc	38.9b	40.7b
7			0.729	0.847ab	0.956ab	0.963	16.2bc	20.1a	36.2c	36.8c
4			0.749	0.837b	0.946ab	0.972	16.0c	19.7ab	29.3d	30.1d
P-value
Nutrient density			<0.001	<0.0001	0.497	0.639	<0.0001	<0.001	<0.001	0.001
Starch:lipid ratio			0.721	0.004	0.023	0.037	0.014	<0.001	<0.0001	<0.0001
Interactions			0.702	0.367	0.553	<0.001	0.718	0.175	0.853	0.789

^abcd Means within a column not sharing common superscripts are significantly different