Table 8. Factor influencing in feed intake of layer

Factor	Difference	Equality	Intake change (%)
Environment temperature	± 1°C	=	1
Weight	20 gm difference	≒	1
Laying eggs rate	± 2%	≒	1
Egg weight	± 1.25g	≒	1
Feather (depilation)	Neck and chest region	≒	10
Feed energy	± 1%	≒	± 1