Pigs were fed 24-hour cultures of Lactobacillus spp. daily for 34 days. On the 8th day of Lactobacillus spp feeding, animals were inoculated with 108 colony-forming units (CFU) of Salmonella typhimurium.
Based on these data, feeding Lactobacillus spp. cultures to pigs infected with S. typhimurium reduced the number of animals that were culture-positive for S. typhimurium by fecal and tonsil samples. Further, feeding Lactobacillus spp. cultures reduced the duration of S. typhimurium shedding from tonsil and fecal samples.
Iowa State University
Baum, C. L. and Harris, D. L., "Effect of Feeding Lactobacillus to Pigs Infected with Salmonella typhimurium" (2001). Swine Research Report, 2000. 45.