title: Clinical and endocrinological aspects of induced parturition in multiparous sows.
abstract: Intramuscular administration of PGF2alpha or its analogue ICI 80996 at 110--112 days of gestation results in grouped parturition. The decrease of progesterone levels is interrupted by a temporary increase. During expulsion rather high values are obtained compared to the control group. Unconjugated oestrogens increase, reaching maximum values just before expulsion.
mesh_terms: D000818:Animals; D004967:Estrogens / Q000097:blood; D005260:Female; D007751:Labor, Induced / Q000662:veterinary*; D008098:Litter Size; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects; D011374:Progesterone / Q000097:blood; D011460:Prostaglandins F / Q000494:pharmacology; D013552:Swine
chemical_list: D004967:Estrogens; D011460:Prostaglandins F; D011374:Progesterone