Adhesion of bacteria to the cecal mucosal surface of conventional and germ-free chickens infected with Eimeria tenella.
When Salmonella typhimurium and Clostridium perfringens were tested in conventional chickens, larger numbers of S typhimurium and C perfringens adhered to Eimeria tenella-infected ceca than to uninfected ceca. In germ-free chickens, S typhimurium and C perfringens adhered to the E tenella-infected cecal mucosa more than to the uninfected cecal mucosa, but fewer Bacteroides vulgatus and Bifidobacterium thermophilum adhered to the E tenella-infected ceca than to the uninfected ceca. Many bacteria adhered to the lesions caused by E tenella as observed by scanning electron microscopy. On the basis of our findings, we suggest that infection with E tenella upsets the balance of competitive adherence of bacteria, allowing more colonization of S typhimurium and C perfringens.
Baba
E
E
Department of Veterinary Medicine, College of Agriculture, University of Osaka Prefecture, Japan.
Wakeshima
H
H
Fukui
K
K
Fukata
T
T
Arakawa
A
A
D000818:Animals; D001422:Bacterial Adhesion; D001439:Bacteroides / Q000378:metabolism / Q000648:ultrastructure; D001644:Bifidobacterium / Q000378:metabolism / Q000648:ultrastructure; D002432:Cecum / Q000382:microbiology* / Q000469:parasitology / Q000648:ultrastructure; D002645:Chickens; D003016:Clostridium perfringens / Q000378:metabolism / Q000648:ultrastructure; D003048:Coccidiosis / Q000382:microbiology / Q000662:veterinary*; D016786:Eimeria tenella / Q000502:physiology*; D005856:Germ-Free Life; D007413:Intestinal Mucosa / Q000382:microbiology / Q000469:parasitology / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D008871:Microvilli / Q000382:microbiology / Q000648:ultrastructure; D011201:Poultry Diseases / Q000382:microbiology*; D012486:Salmonella typhimurium / Q000378:metabolism / Q000648:ultrastructure; D013997:Time Factors