共 12 条
- [2] CULLING ON LOW MILK-YIELD AND ITS ECONOMIC CONSEQUENCES FOR THE DAIRY-HERD [J]. LIVESTOCK PRODUCTION SCIENCE, 1980, 7 (04): : 349 - 359
- [3] ALLAIRE FR, 1968, J ANIM SCI, V27, P22
- [5] THEORETICAL ASPECTS OF CULLING AND SELECTION IN DAIRY-CATTLE [J]. LIVESTOCK PRODUCTION SCIENCE, 1980, 7 (03): : 213 - 224
- [6] HOPKINS JA, 1979, FINANCIAL MANAGEMENT
- [7] ECONOMIC EVALUATION OF REPLACEMENT RATES IN DAIRY HERDS .2. SELECTION OF COWS DURING THE 1ST LACTATION [J]. LIVESTOCK PRODUCTION SCIENCE, 1979, 6 (01): : 29 - 37
- [9] NORMAN HD, 1974, ARSNE40 US DEP AGR A