Table 7.

Standardized ileal amino acid digestibility (SID) of hatchery byproducts (experiment 2).¹

Items	Hatchery byproducts2
	IFE	UHE	LDC	MIX	SEM	P-value
SID, %
Essential amino acid
Arg	88.9ab	87.0b	91.3a	85.6b	1.13	<0.01
His	85.7b	85.9b	90.0a	83.7b	1.09	<0.01
Ile	90.7ab	87.8b	91.8a	90.6ab	0.97	<0.05
Leu	92.0	89.4	92.2	90.8	1.04	0.23
Lys	90.0	90.0	93.6	88.8	1.43	0.13
Met	90.6bc	92.1ab	94.5a	87.4c	0.95	<0.01
Phe	92.4	88.6	90.6	91.7	1.07	0.09
Thr	88.8a	87.2ab	90.7a	84.6b	1.34	0.02
Trp	89.1b	89.8b	100.7a	83.7c	1.24	<0.01
Val	90.3ab	87.7b	91.5a	88.6b	0.91	0.03
Mean	89.9ab	88.5b	92.7a	87.5b	1.04	0.01
Nonessential amino acid
Ala	90.4ab	89.7b	93.5a	88.6b	1.20	<0.05
Asp	87.0ab	85.3b	90.1a	86.1b	1.21	<0.05
Cys	79.8ab	83.4a	81.2a	76.4b	1.44	0.02
Glu	89.9	88.8	92.1	87.7	1.10	0.06
Gly	86.5ab	87.4a	90.2a	83.0b	1.24	<0.01
Pro	90.9a	85.4a	84.1a	73.3b	2.73	<0.01
Ser	83.3	83.1	85.2	83.6	1.21	0.59
Tyr	91.0	86.8	89.7	88.9	1.15	0.10
Mean	87.4	86.2	88.3	83.5	1.23	0.06

^a-cMeans within a variable with no common superscript differ significantly (P < 0.05).

¹Data are least squares means of 7 observations per treatment.

²IFE, infertile egg; LDC, low-grade or dead chick; MIX, mixture (55% IFE, 10% UHE, 10% LDC, and 25% hatched eggshells); UHE, unhatched egg.