共 50 条
- [1] Predicting stage 2 of calving in Holstein-Friesian heifers [J]. JOURNAL OF DAIRY SCIENCE, 2017, 100 (06) : 4847 - 4856
- [7] Insemination factors affecting the conception rate in seasonal calving Holstein-Friesian cows [J]. REPRODUCTION NUTRITION DEVELOPMENT, 2003, 43 (06): : 543 - 555
- [9] Risk factors for calving assistance and dystocia in pasture-based Holstein-Friesian heifers and cows in Ireland [J]. VETERINARY JOURNAL, 2011, 187 (02): : 189 - 194
- [10] AGE AT PUBERTY IN HOLSTEIN-FRIESIAN HEIFERS [J]. JOURNAL OF DAIRY SCIENCE, 1958, 41 (05) : 740 - 740