Pregnancy diagnosis in the ewe: a method for use on the farm.
D000818:Animals; D005260:Female; D005318:Fetal Heart; D005865:Gestational Age; D006326:Heart Auscultation; D010920:Placenta; D011247:Pregnancy; D011270:Pregnancy, Animal; D012756:Sheep; D014159:Transducers; D014463:Ultrasonography; D014472:Umbilicus; D014730:Veterinary Medicine