Table 9. Effect of fattening period on performance on profits in Holstein steers

Item (won / head)	20 mon	21 mon	22 mon	23 mon	24 mon
Income (A)	3,857,152	3,844,466	3,875,604	3,996,319	3,871,994
Carcass sales1)	3,857,152	3,844,466	3,875,604	3,996,319	3,871,994
Operating cost (B)	2,483,795	2,595,399	2,664,585	2,765,460	2,860,556
Calves	1,025,000	1,025,000	1,025,000	1,025,000	1,025,000
Concentrate2)	1,003,010	1,082,864	1,118,962	1,189,761	1,244,074
Rice straw3)	189,285	200,535	213,123	223,230	242,982
Other cost4)	266,500	287,000	307,500	328,000	348,500
Profit (A−B)	1,373,357	1,249,067	1,231,015	1,230,859	1,011,438

Carcass price (won/kg): A1+, 12,005; B1+, 11,300; C1+, 10,820; A1, 10,930; B1, 9,975; C1, 9,200; A2, 9,350; B2, 9,072; C2, 8,182; A3, 7,930; B3, 7,775; C3, 7,122.
Concentrated price (won/kg): fattening, 249.7; finishing, 238.0.
Rice straw price: 300.0 won/kg.
Hired labor, bedding materials, electricity, transport, water service and veterinary medicine.