Table 2.

Mean economic values¹ of production cost, milk income and lifetime profit according to number of lactations and percentage from total production cost for lifetime

No. of lactations	No. of heads	IM		CFC		CM		CD		LP
		Mean	%	Mean	%	Mean	%	Mean	%	Mean
1	59,835	6,953	83.2	2,833	33.9	5,521	66.1			−581
2	69,993	15,014	112.6	2,822	21.2	9,585	71.9	925	6.9	1,141
3	60,542	23,735	127.7	2,825	15.2	14,083	75.8	1,676	9.0	3,024
4	45,166	32,280	137.8	2,807	12.0	18,203	77.7	2,411	10.3	5,709
5	24,211	40,576	144.7	2,786	9.9	22,123	78.9	3,139	11.2	8,128
6	10,903	48,601	149.9	2,772	8.5	25,757	79.4	3,897	12.0	10,524
7	4,175	56,167	154.7	2,750	7.6	28,884	79.6	4,666	12.9	12,765
8	1,368	63,246	160.3	2,752	7.0	31,279	79.3	5,419	13.7	15,969
9	337	70,512	176.6	2,722	6.8	31,199	78.1	6,007	15.0	20,480
10	43	75,490	182.2	2,680	6.5	32,089	77.5	6,658	16.1	19,976
2.87	27,6572	22,513	124.9	2,818	15.6	13,191	73.2	2,019	11.2	2,502

LP = Lifetime profit due to milk production, IM = Milk income for lifetime, CFC = Replacement cost, CM = Production cost for period in milk production of lifetime, CD = Production cost for dry period in lifetime.

¹Unit of value is 1,000 Won.

²Total number of individuals.