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- [2] ESTABLISHMENT AND OPERATION OF A CENTRAL LABORATORY FOR PREGNANCY TESTING IN COWS [J]. BRITISH VETERINARY JOURNAL, 1976, 132 (05): : 518 - 528
- [3] ESTROUS CYCLES IN AYRSHIRE COWS BEFORE AND AFTER INSEMINATION [J]. VETERINARY RECORD, 1973, 92 (16) : 427 - 428
- [4] BOYD H., 1961, British Veterinary Journal, V117, P18
- [6] CONTROL OF CATTLE FERTILITY - USE OF COMPUTERIZED RECORDS [J]. BRITISH VETERINARY JOURNAL, 1977, 133 (04): : 346 - 355
- [7] PREGNANCY DIAGNOSIS IN COW FROM MILK PROGESTERONE CONCENTRATION [J]. BRITISH VETERINARY JOURNAL, 1976, 132 (05): : 445 - 464
- [9] HOFFMANN B, 1973, Zuchthygiene (Berlin), V8, P154
- [10] MILK PROGESTERONE AS A PARAMETER FOR FERTILITY-CONTROL IN CATTLE - METHODOLOGICAL APPROACHES AND PRESENT STATUS OF APPLICATION IN GERMANY [J]. BRITISH VETERINARY JOURNAL, 1976, 132 (05): : 469 - 476