Table 4.

Cumulative egg production (eggs) from wk 23 to 55 and mean egg weight of hens fed toward a High and Standard BW¹ curve and photostimulated (PS) at wk 18 or 21.

	BW	PS (wk)	Eggs	SEM	Egg weight (g)	SEM
BW	High		129.4a	7.3	63.9a	0.2
	Standard		92.8b	7.3	62.6b	0.2
PS		18	83.8b	7.5	62.3b	0.3
		21	138.4a	7.0	64.1a	0.2
BW × PS	High	18	106.8	10.5	64.0a	0.4
		21	152.0	10.0	63.8a	0.2
	Standard	18	60.8	10.8	60.6b	0.4
		21	124.7	10.0	64.5a	0.2
Source of variation			––––––P-value ––––––
BW			0.001		<0.001
PS			<0.001		<0.001
BW × PS			0.368		<0.001

^a,bLSMeans within a column and treatment group lacking a common superscript differ (P < 0.05).

¹Hens followed either the breeder-recommended BW curve (Standard) or an accelerated BW curve reaching the 21 wk BW at 18 wk (High).