THE NORMAL INTESTINAL FLORA OF THE PIG. III. QUALITATIVE STUDIES OF LACTOBACILLI AND STREPTOCOCCI

Abstract

SUMMARY: Streptococci and lactobacilli were isolated from the faeces and caecal contents of experimental pigs receiving various diets. Fifty‐seven strains of streptococci and forty‐one (representative of 220) lactobacilli were examined physiologically and serologically. Lactobacillus acidophilus and L. fermenti predominated among the lactobacilli, while the largest group of streptococci resembled the ‘unclassified’ strains of Barnes & Ingram (1955) and Barnes, Ingram & Ingram (1956) from bacon factory premises, pig faeces and canned hams.