Some aspects of twin-gestation in the mare.

  title={Some aspects of twin-gestation in the mare.},
  author={M M Vandeplassche and Luba Podliachouk and Roselyne Beaud},
  journal={Canadian journal of comparative medicine : Revue canadienne de medecine comparee},
  volume={34 3},
A study has been made of 44 cases of twin pregnancy in mares. The fetuses, foals, fetal membranes and blood groups of parents and foals were examined in order to determine the incidence of chorio-vascular anastomosis, blood chimaerism and freemartinism. All of the twins proved to be dizygotic and 33 of the 34 pregnancies were bicornual. Fusion of the chorion was seen in 14 of 22 placentas and macroscopic choriovascular bridges were observed in five of these, although blood chimaerism was… CONTINUE READING