Table 4.

Growth performance of broiler chickens fed corn stored for 2, 3, 4, or 5 yr (Exp. 1).¹

Item	Corn storage time, yr				SEM	P-value
	2	3	4	5		Linear	Quadratic
Feed intake, kg
wk 0 to 3	0.82	0.81	0.81	0.85	0.015	0.544	0.522
wk 4 to 6	2.13	2.13	2.13	2.04	0.022	0.217	0.313
wk 0 to 6	2.95	2.94	2.94	2.89	0.030	0.584	0.579
Body weight gain, kg
wk 0 to 3	0.58a	0.55ab	0.56ab	0.54b	0.006	0.055	0.748
wk 4 to 6	1.09bc	1.15a	1.12ab	1.07bc	0.011	0.393	0.021
wk 0 to 6	1.67	1.70	1.68	1.61	0.009	0.091	0.062
FCR
wk 0 to 3	1.41ab	1.47ab	1.31b	1.57a	0.028	0.085	0.547
wk 4 to 6	1.95a	1.85bc	1.91b	1.91b	0.012	0.339	0.045
wk 0 to 6	1.77	1.73	1.75	1.79	0.013	0.164	0.069
EPI2
wk 0 to 3	213a	197ab	202a	178b	5.3	0.041	0.699
wk 4 to 6	270c	298a	282bc	269c	4.1	0.541	0.010
wk 0 to 6	234bc	242a	236ab	221c	2.4	0.023	0.008

^a–c Means within a row lacking a common superscript differ (P < 0.05).

¹Data are means of 8 replicate pens with 6 female broiler chickens per pen, and experiment lasted for 42 d.

²European production index (EPI) = 100 × [BW (kg) × Livability (%)]/[FCR × Age (d)].