The sow, her litter and the veterinarian.
D000818:Animals; D000831:Animals, Newborn; D004886:Erysipelas / Q000662:veterinary; D004927:Escherichia coli Infections / Q000662:veterinary; D005260:Female; D005761:Gastroenteritis, Transmissible, of Swine; D006798:Housing; D006801:Humans; D007775:Lactation Disorders / Q000662:veterinary; D010273:Parasitic Diseases, Animal; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000662:veterinary; D013315:Stress, Psychological; D013552:Swine; D013553:Swine Diseases; D014730:Veterinary Medicine; D014881:Water Supply