Abstract
Total 286 strains of lactobacilli were isolated from different segments of the alimentary tract of healthy horses. They were identified by the carbohydrate fermentation patterns and physiological properties as L. salivarius (10 biovars), L. acidophilus (8 biovars), L. reuteri (8 biovars) and Lactobacillus spp.(2 biovars). L. acidophilus and L. reuteri were found in all parts of the alimentary tract, while L. salivarus were not isolated from the stomach. The unidentified Lactobacillus spp. were isolated only from feces.