Corpus luteum function in the pig: progesterone profiles of cyclic and pregnant gilts.

Authors

  • J. van der Meulen
  • F.A. Helmond
  • C.P.J. Oudenaarden

DOI:

https://doi.org/10.18174/njas.v38i1.16609

Abstract

Progesterone profiles of 7 cycling gilts and those of 6 gilts inseminated on day 1 (1 day after the onset of oestrus) were studied. The results showed that plasma progesterone concentration in the inseminated group was higher (P<0.05) from day 14 onwards, indicating that the "rescue" of the corpus luteum (i.e. from luteolyis) for pregnancy occurs before day 14. In 1 of the inseminated gilts, the progesterone concentration declined on day 27, and the gilt returned to oestrus on day 30. The progesterone and oestrone sulphate profiles of this gilt indicated that the return to oestrus may have been caused by embryonic loss before day 14 after a 1st signal for corpus luteum maintenance has been generated. Another gilt aborted on day 27. The data on this gilt indicate that pregnancy failure may have been caused by a maternal malfunction. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Downloads

Published

1990-03-01

Issue

Vol. 38 No. 1 (1990)

Section

Papers

License

© Copyright KLV All rights reserved. The copyright covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. The Author may publish his/her contribution on his/her personal Web page provided that he/she creates a link to http://library.wur.nl/ojs/index.php/njas and that together with this electronic version it is clearly pointed out, by prominently adding "© KLV", that the copyright for this contribution is held by KLV. The full-text version may be available from the Author's Web page only after a delay of 12 months following the publication of the paper, whereas such a delay is not required for the abstract.