This invention provides a method for initiation of farrowing of pregnant domestic swine within a predictable number of hours by administering a progesterone receptor antagonist. The present method also significantly reduces reduce stillborn pigs. A preferred progesterone receptor antagonist for use in the present method is RU38,486. The progesterone receptor antagonist can be administered to a pregnant swine via an appropriate route of administration, such as orally, intramuscularly or intravaginally. The present invention greatly facilitates human supervision and assistance during parturition, and is important for the production and profitability of farrowing operation.
本发明提供了一种方法,通过使用
孕酮受体拮抗剂,可在可预测的小时数内使怀孕家猪开始产仔。本方法还能大大减少死胎猪。用于本方法的首选
孕酮受体拮抗剂是 RU38,486。
孕酮受体拮抗剂可通过适当的给药途径,如口服、肌肉注射或阴道内给药给妊娠猪。本发明极大地方便了分娩过程中的人工监护和帮助,对产仔操作的生产和盈利具有重要意义。