Table 11. Analysis raw materials cost of factor influencing in feed intake of layer (feed intake 100 gm/day/bird CP 17%, ME 2,800 kcal/kg, cost ₩243.2)

Factor	Difference	Intake change	Cost (₩)	ME (kcal)
Environment temperature	± 1°C	1%	2.43	28
Weight	20 gm difference	1%	2.43	28
Laying eggs rate	± 2%	1%	2.43	28
Egg weight	± 1.25 g	1%	2.43	28
Feather (depilation)	Neck and chest region	10%	24.32	280
Feed energy	± 1%	± 1%	± 2.43	28