Table 3.

Effect of dietary 25-OH-D₃ on performance of laying hens under high or low stocking density (9–16 wk)¹.

Item	Laying rate, %	Egg weight, g	FCR	Feed intake, g	Broken egg, %	Unqualified egg,%
Density 25-OH-D3
Low−	94.74 ± 0.88a	65.47 ± 0.55	1.95 ± 0.03	120.68 ± 1.43a	1.54 ± 0.17b	1.20 ± 0.07
Low+	95.42 ± 0.77a	64.58 ± 0.67	1.96 ± 0.06	120.67 ± 1.23a	1.33 ± 0.20b	1.14 ± 0.17
High−	92.99 ± 0.43b	64.52 ± 0.32	1.98 ± 0.05	118.68 ± 1.45a,b	2.44 ± 0.11a	1.65 ± 0.11
High+	91.66 ± 0.66b	64.32 ± 0.25	1.99 ± 0.04	116.44 ± 1.91b	1.41 ± 0.14b	1.77 ± 0.23
P-value	<0.01	0.09	0.67	0.04	<0.01	0.41
Main effect P-value
Density	<0.01	0.10	0.40	<0.01	<0.01	0.54
25-OH-D3	0.53	0.24	0.94	0.23	0.02	0.33
Density*25-OH-D3	0.08	0.40	0.90	0.51	0.04	0.21

^a-bMeans with different superscripts within a column differ significantly (P < 0.05).

Abbreviations: 25-OH-D₃, 25-hydroxycholecalciferol; FCR, feed conversion ratio.

¹Each mean represents 10 replicates per treatment, with 20 layer per replicate.