Preweaning mortality in pigs. 1. Herd investigations.
D000367:Age Factors; D000821:Animal Feed; D000818:Animals; D000831:Animals, Newborn; D001424:Bacterial Infections / Q000401:mortality / Q000662:veterinary*; D001947:Breeding; D003718:Denmark; D005260:Female; D005313:Fetal Death / Q000662:veterinary; D005767:Gastrointestinal Diseases / Q000401:mortality / Q000662:veterinary*; D006799:Housing, Animal; D006920:Hygiene; D011247:Pregnancy; D012621:Seasons; D013552:Swine; D013553:Swine Diseases / Q000401:mortality*; D013997:Time Factors; D014886:Weaning; D014947:Wounds and Injuries / Q000401:mortality / Q000662:veterinary*