title: The effect of progestagen, PMSG and time of insemination on fertility in ewes following intra-uterine insemination with frozen semen.
mesh_terms: D000818:Animals; D005260:Female; D005298:Fertility / Q000187:drug effects*; D005615:Freezing; D006064:Gonadotropins, Equine / Q000494:pharmacology*; D007315:Insemination, Artificial / Q000379:methods / Q000662:veterinary*; D011247:Pregnancy; D011372:Progestins / Q000494:pharmacology*; D012662:Semen Preservation / Q000662:veterinary*; D012756:Sheep / Q000502:physiology*; D013997:Time Factors
chemical_list: D006064:Gonadotropins, Equine; D011372:Progestins