Studies on Gram-Negative Anaerobic Rods in the Fecal Flora of Animals : I. Distribution of Gram-Negative Anaerobic, Rods in Feces of Healthy Dogs

Abstract

On a modified NBGT medium, many strains were isolated from the feces of ten healthy dogs and identified according to the Manuals of Prevot and Buttiaux. 1) In dog feces, 10⁷∼10¹⁰ cells of Bacteroides and 10⁶∼10⁹ cells of Sphaerophorus were found per gram of feces. The former were more predominant than the latter. 2) Of the species of Bacteroides, B. uniformis was the most predominant and followed by B. convexus, B. distasonis B. thetaiotaomicron, B. vulgatus and B. exiguus. 3) Of the species of Sphaerophorus, Sph. necrophorus and Sph. gulosus were the most predominant. Some unidentified species, SPh. glycolyticus, Sph. freundii and Sph. pyogenes, were also found.