Table 10. Analysis raw materials cost of amino acid requirement (% of feed) of white leghorn that do 95% laying eggs that use feed mix program

Amino acid level	Feed intake (gm/day/bird)
	120	110	100	90	80	70
Metabolizable energy (kcal/kg)	2,700	2,700	2,800	2,850	2,850	2,900
Crude protein (%)	14.0	15.5	17.0	19.0	20.5	22.1
Lysine (%)	0.56	0.63	0.70	0.77	0.84	0.91
Methionine (%)	0.31	0.34	0.37	0.41	0.47	0.56
Methionine + cystine (%)	0.53	0.58	0.64	0.71	0.80	0.91
Cost (₩)	229.9	242.7	243.2	255.9	262.2	278.6