Sows that fail to become pregnant show luteal regression at day 13 after mating

S. Björkman, C. Oliviero, N.M. Soede, O. Peltoniemi

Research output: Contribution to conferenceAbstractAcademic

Abstract

In mated sows, corpus luteum (CL) function is important for the establishment of the pregnancy. The maximum CL size is established at day 8 - 9 of the pregnancy and maintained autonomous until day 12. Then, CL maintenance will depend on hormones such as LH and PGF2α. PGF2α is released from the endometrium at day 14 and triggers CL regression. This regression can be prevented in pregnant sows due to estradiol production from the attaching conceptuses; which decreases endocrine PGF2α release.
We hypothesized that a negative CL development between day 12 and 13 has a negative effect on the pregnancy rate in mated sows and on litter size in pregnant sows.
Original languageEnglish
Pages118
Publication statusPublished - 2016
Event24th International Pig Veterinary Society Congress - Royal Dublin Society, Dublin, Ireland
Duration: 7 Jun 201610 Jun 2016

Conference

Conference24th International Pig Veterinary Society Congress
CountryIreland
CityDublin
Period7/06/1610/06/16

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Björkman, S., Oliviero, C., Soede, N. M., & Peltoniemi, O. (2016). Sows that fail to become pregnant show luteal regression at day 13 after mating. 118. Abstract from 24th International Pig Veterinary Society Congress, Dublin, Ireland.