Table 6.

Apparent ileal amino acid digestibility (AID) of hatchery byproducts (experiment 2).¹

Items	Hatchery byproducts2
	IFE	UHE	LDC	MIX	SEM	P-value
AID, %
Essential amino acid
Arg	84.7ab	82.9bc	87.0a	80.7c	1.13	<0.01
His	80.9b	81.5b	85.3a	78.7b	1.09	<0.01
Ile	87.3	84.3	87.9	86.2	0.97	0.07
Leu	88.3	85.7	88.2	86.1	1.04	0.19
Lys	85.7	85.2	88.5	83.1	1.43	0.09
Met	88.1a	89.5a	91.0a	84.5b	0.95	<0.01
Phe	88.9	85.1	86.7	87.1	1.07	0.12
Thr	82.1a	80.5a	83.7a	76.5b	1.34	<0.01
Trp	86.5b	86.2b	97.8a	79.8c	1.24	<0.01
Val	86.8ab	84.1b	87.4a	84.2b	0.91	0.03
Mean	85.9ab	84.5bc	88.4a	82.7c	1.04	<0.01
Nonessential amino acid
Ala	85.5b	85.2b	89.0a	82.6b	1.20	<0.01
Asp	83.3ab	81.5b	86.0a	81.5b	1.21	<0.05
Cys	71.5bc	77.4a	74.7ab	69.9c	1.44	<0.01
Glu	86.2ab	85.5ab	88.7a	83.3b	1.10	0.02
Gly	80.1bc	83.7b	87.5a	77.5c	1.24	<0.01
Pro	86.1a	80.2a	80.1a	66.2b	2.73	<0.01
Ser	79.1	78.7	80.4	78.4	1.21	0.68
Tyr	86.9	82.3	83.8	84.1	1.15	0.07
Mean	82.3a	81.8a	83.8a	77.9b	1.23	0.02

^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.