Table 2.

Effect of hen strain, P, and Ca on body weight (BW); average daily feed intake (ADFI); average egg weight in the excreta collection period; and concentrations of inorganic P, Ca, and myo-inositol in the blood plasma of laying hens aged 31 weeks.

			BW	ADFI	Average Egg Weight	Inorganic P	Calcium	myo-Inositol
Strain	Dietary P	Dietary Ca	g	g/d	g	mmol/L	mmol/L	mmol/L
LB 1	P+	Ca+	1784 bc	104	57.2	1.8	7.5	0.15
LB	P+	Ca−	1929 a	114	58.2	1.7	7.3	0.14
LB	P−	Ca+	1838 ab	111	58.8	1.8	6.9	0.14
LB	P−	Ca−	1809 b	110	59.6	1.8	7.1	0.16
LSL 2	P+	Ca+	1648 d	109	60.6	1.5	6.2	0.14
LSL	P+	Ca−	1641 d	116	59.5	1.8	7.3	0.15
LSL	P−	Ca+	1599 d	109	61.2	1.7	7.3	0.15
LSL	P−	Ca−	1683 cd	118	62.6	1.6	6.9	0.15
Pooled SEM			41.0	3.3	1.15	0.11	0.47	0.010
p-values	Strain		<0.001	0.165	0.002	0.133	0.425	0.847
	P		0.500	0.571	0.047	0.514	0.857	0.615
	Ca		0.081	0.008	0.474	0.705	0.551	0.458
	Strain × P		0.579	0.798	0.859	0.562	0.261	0.671
	Strain × Ca		0.717	0.387	0.525	0.172	0.634	0.728
	P × Ca		0.445	0.293	0.460	0.312	0.363	0.418
	Strain × P × Ca		0.016	0.202	0.451	0.055	0.121	0.085

Data are given as LSmeans; n = 8–10 hens. ¹ LB = Lohmann Brown-Classic. ² LSL = Lohmann LSL-Classic. ^a–d Different superscript letters within a column indicate significant interaction effects among strains, dietary P, and dietary Ca (p < 0.05).