Detection of foetal circulation in the mare and cow by Doppler ultra-sound.
D000818:Animals; D001775:Blood Circulation; D002417:Cattle / Q000502:physiology*; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006736:Horses / Q000502:physiology*; D011247:Pregnancy; D011258:Pregnancy Tests; D011674:Pulse; D014463:Ultrasonography