Experimental infection of dogs with Campylobacter jejuni.

Three groups of conventional puppies were inoculated orally with Campylobacter jejuni biotype 2 which had been isolated from the small intestine of a dog with enteritis. Mild enteric disease was observed in one group. There was superficial intestinal colonization by the organism but penetration of intestinal epithelial cells was not apparent.

Bacteria in enteric lesions of horses.

Thirty-three species of bacteria were isolated from the gastrointestinal mucosa of 23 adult horses and two foals. The bacteria isolated could be related to gross and microscopical lesions in some cases. Clostridium perfringens type A, Actinobacillus equuli, Salmonella typhimurium and Campylobacter coli biotype 1 could all be associated with gastrointestinal lesions.

Production od diarrhoea and enteric lesions in calves by the oral inoculation of pure cultures of Clostridium sordellii.

Pure cultures of an isolate of Clostridium sordellii obtained from a case of haemorrhagic enteritis in a two-year-old cow were used to infect calves in three experiments. C sordellii initiated a slight rise in rectal temperature and the passage of soft faeces containing blood and mucus within one to six days of inoculation in six calves in two controlled experiments. C sordellii was isolated from the faeces of all affected animals but only from their large intestines at slaughter.