title: Control of the time of parturition in sows with prostaglandin F2alpha.
abstract: Pregnant gilts and sows were given a single intramuscular injection of from 5-10 mg of prostaglandin F2alpha-tromethamine salt (dependent on liveweight) on day 111, 112 or 113 of pregnancy (first day of estrus = day 0) to induce parturition. When injected on day 111, 44% of the pigs farrowed within 40 hours compared with 93% injected on days 112 or 113. The mean time to the induced parturition was 27.3 +/- 4.7 hours. Signs of discomfort were observed during the first hour posttreatment but there were no apparent effects on lactation or on the mothering ability of the dams after farrowing.
mesh_terms: D000818:Animals; D005260:Female; D007751:Labor, Induced / Q000662:veterinary*; D011247:Pregnancy; D011461:Prostaglandins F, Synthetic / Q000009:adverse effects / Q000494:pharmacology*; D013552:Swine / Q000254:growth & development / Q000502:physiology*
chemical_list: D011461:Prostaglandins F, Synthetic