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

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

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 language	English
Pages	118
Publication status	Published - 2016
Event	24th International Pig Veterinary Society Congress - Royal Dublin Society, Dublin, Ireland Duration: 7 Jun 2016 → 10 Jun 2016

Conference/symposium

Conference/symposium	24th International Pig Veterinary Society Congress
Country/Territory	Ireland
City	Dublin
Period	7/06/16 → 10/06/16

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https://edepot.wur.nl/404206

Cite this

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title = "Sows that fail to become pregnant show luteal regression at day 13 after mating",

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.",

author = "S. Bj{\"o}rkman and C. Oliviero and N.M. Soede and O. Peltoniemi",

year = "2016",

language = "English",

pages = "118",

note = "24th International Pig Veterinary Society Congress ; Conference date: 07-06-2016 Through 10-06-2016",

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TY - CONF

T1 - Sows that fail to become pregnant show luteal regression at day 13 after mating

AU - Björkman, S.

AU - Oliviero, C.

AU - Soede, N.M.

AU - Peltoniemi, O.

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

M3 - Abstract

SP - 118

T2 - 24th International Pig Veterinary Society Congress

Y2 - 7 June 2016 through 10 June 2016

ER -

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

Abstract

Conference/symposium

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Cite this