title: Fertility of Friesian cows after insemination on the second, third and fourth days of low milk progesterone concentrations.
authors: Ministry of Agriculture, Fisheries and Food, Reading Cattle Breeding Centre, Shinfield.
authors: J A
authors: JA
authors: Foulkes
authors: R G
authors: RG
authors: Goodey
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D005298:Fertility; D007315:Insemination, Artificial / Q000662:veterinary*; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D011374:Progesterone / Q000032:analysis*
chemical_list: D011374:Progesterone