Animal Science Department


Date of this Version



Published in 1996 Nebraska Beef Cattle Report; published by Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.


We reported on a new species of intestinal spirochete bacterium, Serpulina pilosicoli/, associated with a diarrheal disease of grower-finisher swine, called porcine colonic spirochetosis (PCS). In this report we show that Serpulina pilosicoli, associated with outbreaks of PCS in the United States, attached to the cecal surface of chicks while Serpulina innocens, a non-pathogenic intestinal spirochete, did not. These findings support a role for Serpulina pilosicoli as a cause of diarrhea and reduced feed efficiency in swine.