title: Embryological studies on the dartmoor pony during the first third of gestation.
abstract: A sequence of ten known-age embryos recovered from Dartmoor Ponies during the first 4 months of gestation is described. Changes in size, shape and vascularity of the conceptus are recorded, as well as the growth and decline of the yolk-sac and the succeeding establishment of the allantochorion. The progress of equine somatogenesis is compared with that of the pig which it lags on average of about 4 days. Some quantitative data are presented.
mesh_terms: D000482:Allantois; D000818:Animals; D002823:Chorion; D005260:Female; D005865:Gestational Age; D006736:Horses / Q000196:embryology*; D014817:Vitelline Membrane