Laster, D B Ovulation, fertility and prenatal mortality in heifers treated with PMSG or porcine FSH. [electronic resource] - Journal of reproduction and fertility May 1973 - 275-82 p. digital Publication Type: Journal Article ISSN: 0022-4251 Standard No.: 10.1530/jrf.0.0330275 doi Subjects--Topical Terms: Abortion, Spontaneous--prevention & controlAnimalsCattle--physiologyCorpus Luteum--drug effectsEstrus--drug effectsFemaleFertility--drug effectsFertilization--drug effectsFetal DeathFollicle Stimulating Hormone--pharmacologyGonadotropins, Equine--pharmacologyInjections, IntramuscularMicroscopy, Phase-ContrastOvulation--drug effectsPregnancyProgesterone--pharmacologySwineUterus--drug effects