The Visual Guide to
Porcine Reproduction
Abortion: Undetermined Cause

Autolysing Placenta.
The fetal membranes are degenerating. A pink 18-20 day embryo is present in the center. Cause unknown.
Evans LE (2009)

Endometrial Debris.
The endometrium, during early pregnancy, has been exposed. There is evidence of endometrial debris at the site of embryo resorption.
Evans LE (2009)

Corpora Lutea after Abortion.
Postmortem specimen. Prominent corpora lutea remained after abortion in this sow.
Smith MC (2011)