title: Observations on parturition in the sow. I. Factors associated with the delivery of the piglets and their subsequent behaviour.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal; D001722:Birth Order; D004420:Dystocia / Q000662:veterinary; D005260:Female; D007746:Labor Presentation; D007743:Labor, Obstetric; D010298:Parity; D011187:Posture; D011247:Pregnancy; D012421:Rupture; D013552:Swine; D013553:Swine Diseases; D013997:Time Factors; D014470:Umbilical Cord