INCOME OVER INVESTMENT IN SEMEN

[1] BURNSIDE EB, 1967, HOLSTEIN FRIESIAN J, V30, P26

[2] DICKINSON FN, 1971, USDA DHIA SIRE SUMMA, pR12

[3] INVESTMENT APPRAISAL FOR NATIONAL BREEDING PROGRAMMES [J]. ANIMAL PRODUCTION, 1971, 13 (FEB): : 37 - +

[4] SELECTION IN DUAL PURPOSE CATTLE POPULATIONS - DEFINING BREEDING OBJECTIVE [J]. ANIMAL PRODUCTION, 1974, 18 (JUN): : 237 - 247

[5] ASSOCIATIONS AMONG MEASURES OF ECONOMIC EFFICIENCY [J]. JOURNAL OF DAIRY SCIENCE, 1971, 54 (06) : 867 - &

[6] NORMAN HD, 1971, ARS44223 DAIR HERD I, V47, P1

[7] SPEICHER JA, 1973, J AM VET MED ASSOC, V162, P463

[8] WILTON JW, 1968, THESIS CORNELL U

[9] YOUNG CW, 1972, HOARDS DAIRYMAN 0910, P981

[1] BURNSIDE EB, 1967, HOLSTEIN FRIESIAN J, V30, P26

[2] DICKINSON FN, 1971, USDA DHIA SIRE SUMMA, pR12

[3] INVESTMENT APPRAISAL FOR NATIONAL BREEDING PROGRAMMES [J]. ANIMAL PRODUCTION, 1971, 13 (FEB): : 37 - +

[4] SELECTION IN DUAL PURPOSE CATTLE POPULATIONS - DEFINING BREEDING OBJECTIVE [J]. ANIMAL PRODUCTION, 1974, 18 (JUN): : 237 - 247

[5] ASSOCIATIONS AMONG MEASURES OF ECONOMIC EFFICIENCY [J]. JOURNAL OF DAIRY SCIENCE, 1971, 54 (06) : 867 - &

[6] NORMAN HD, 1971, ARS44223 DAIR HERD I, V47, P1

[7] SPEICHER JA, 1973, J AM VET MED ASSOC, V162, P463

[8] WILTON JW, 1968, THESIS CORNELL U

[9] YOUNG CW, 1972, HOARDS DAIRYMAN 0910, P981