共 50 条
- [36] RELATIONSHIPS OF CALVING EASE WITH TYPE TRAITS [J]. JOURNAL OF DAIRY SCIENCE, 1990, 73 (12) : 3586 - 3590
- [37] METHODS OF SIRE EVALUATION FOR CALVING EASE [J]. JOURNAL OF DAIRY SCIENCE, 1976, 59 (03) : 544 - 551
- [38] SIRE PROOFS FOR EASE OF CALVING IN CHAROLAIS [J]. CANADIAN JOURNAL OF ANIMAL SCIENCE, 1975, 55 (04) : 790 - 790
- [40] CALVING EASE IN SIMMENTAL SIRED CALVES [J]. JOURNAL OF ANIMAL SCIENCE, 1973, 36 (06) : 1205 - 1205