title: Enteric cryptosporidial infection in pigs: 184 cases (1981-1985).
abstract: Cryptosporidia organisms were detected histologically in the microvillus brush border of 5.3% (184/3,491) of consecutive live pigs submitted for routine diagnostic evaluation between 1981 and 1985. Infected pigs came from 133 farms and usually were 6 to 12 weeks old, but ranged from 1 to 30 weeks old. Organisms were found in the jejunum, ileum, cecum, and colon, but primarily in microvilli of dome epithelium in the ileum. A seasonal incidence was not observed. Only 26% of the cryptosporidia-infected pigs had diarrhea, and most of those had other primary diarrheagenic agents or lesions capable of causing their diarrhea.
mesh_terms: D000367:Age Factors; D000818:Animals; D003044:Coccidia / Q000302:isolation & purification*; D003457:Cryptosporidiosis / Q000469:parasitology*; D003458:Cryptosporidium / Q000302:isolation & purification* / Q000648:ultrastructure; D003967:Diarrhea / Q000209:etiology / Q000662:veterinary; D007082:Ileum / Q000469:parasitology / Q000648:ultrastructure; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D008854:Microscopy, Electron; D008871:Microvilli / Q000469:parasitology / Q000648:ultrastructure; D012189:Retrospective Studies; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology*