Nutrition & Metabolism

Table 3 Effect of different levels of vitamin D₃ on laying performance of laying hens*

From: Dietary vitamin D₃ supplementation protects laying hens against lipopolysaccharide-induced immunological stress

Items	Dietary VD₃ levels, IU/kg
Items	0	500	1500	3000	SEM	P-value
Hen-day egg production (%)	27.95^b	90.30^a	94.03^a	92.29^a	5.93	< 0.001
Average egg weight(g)	58.39^b	60.43^a	60.44^a	59.93^a	0.26	0.007
Day feed intake (g /d /hen)	137.60^a	113.76^b	116.10^b	113.88^b	2.20	< 0.001
FCR (g feed / g egg)	9.56^a	2.12^b	2.07b	2.09^b	0.74	< 0.001
Daily egg mass(g/hens/d)	16.30^b	54.55^a	56.83^a	55.31^a	3.62	< 0.001
Broken egg ratio (%)	5.48^a	0.29^b	0.17^b	0.27^b	0.01	< 0.001
Death ratio (%)	8.47	3.36	5.62	3.06	0.01	0.063

*Data are presented as mean ± SEM (n = 90 hens /group)
^a-cMeans within a row without a common superscript differ significantly (P < 0.05)
FCR g of feed / g of egg mass

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ISSN: 1743-7075

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