Page 7 of articles about diarrhoea

Diarrhea with blood and mucus from a pig infected with Brachyspira hyodysenteriae

Brachyspira-associated colitis in swine

Two species of Brachyspira are well-recognized pathogens of pigs: B pilosicoli and B. hyodysenteriae. Recently, dysentery-like disease has been reported in association with infection by strongly beta-hemolytic spirochetes which are not identified as B. hyodysenteriae.

Coccidiosis

Although pigs can be infected with different species of coccidia, in suckling piglets the most important disease caused by enteric protozoa is coccidiosis due to Isospora suis.