. 2019 Dec 13;99(3):1421–1431. doi: 10.1016/j.psj.2019.10.060

Table 8.

Effect of dietary treatments on apparent protein (N) digestibility coefficients and disappearance rates (g/bird/D) in the distal jejunum and distal ileum and starch:protein disappearance rate ratios in distal jejunum and distal ileum at 35 D posthatch.

Treatment	Distal jejunum		Distal ileum		Starch:protein (N) disappearance rate ratio
Treatment	Digestibility	Disappearance	Digestibility	Disappearance	Distal jejunum	Distal jejunum
1. 200 g/kg CP	0.674^a	18.30^b,c	0.764^a	20.65^b	2.08^a	2.01^a
2. 188 g/kg CP	0.716^b	18.91^c	0.823^b,c	21.72^b	2.14^a	2.04^a
3. 172 g/kg CP	0.740^c,d	18.54^c	0.833^b,c	20.87^b	2.45^b	2.36^b
4. 156 g/kg CP	0.754^d	16.85^a	0.843^c	18.84^a	3.17^d	3.06^d
5. 120 mEq/kg DEB	0.724^b,c,d	16.11^a	0.825^b,c	18.38^a	3.28^d	3.19^e
6. 2,971 kcal/kg	0.740^c,d	17.01^a,b	0.825^b,c	18.97^a	2.70^c	2.63^c
7. 2,870 kcal/kg	0.700^a	16.57^b	0.804^b	19.04^a	2.61^c	2.39^b
SEM	0.0116	0.4537	0.0111	0.4147	0.0507	0.0316
Significance (P=)	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
LSD (P < 0.05)	0.0332	1.295	0.0318	1.184	0.145	0.090
Linear effect	r = −0.678	r = 0.382	r = −0.609	r = 0.514	r = −0.908	r = −0.918
Diets 1 to 4	P < 0.001	P = 0.045	P < 0.001	P = 0.005	P < 0.001	P < 0.001

^a-eMeans within columns not sharing common suffixes are significantly different at the 5% level of probability.

Abbreviations: LSD, low stocking density; DEB, dietary electrolyte balance.