Table 3.

Effect of dietary β-carotene supplementation on laying performance of hens.

Amount of β-carotene (mg/kg diet)	Egg production (%)	Egg weight (g)	Feed intake (g/hen/d)	Feed/egg (g/g)
0 (basal diet)	92.13 ± 1.50	64.66 ± 1.57	124.93 ± 3.60	2.17 ± 0.06
15	92.34 ± 3.14	64.44 ± 0.58	124.14 ± 3.04	2.15 ± 0.10
30	92.35 ± 2.88	64.68 ± 0.54	125.32 ± 1.59	2.17 ± 0.08
60	92.70 ± 1.45	64.39 ± 1.06	124.90 ± 2.08	2.15 ± 0.03
120	92.88 ± 2.01	64.95 ± 0.73	125.39 ± 4.76	2.14 ± 0.08
P value	0.9725	0.8881	0.9342	0.8025