Elam, N. A.; Gleghorn, J. F.; Rivera, J. D.; Galyean, M. L.; Defoor, P. J.; Brashears, M. M.; Younts-Dahl, S. M.
Effects of live cultures of Lactobacillus acidophilus (strains NP45 and NP51) and Propionibacterium freudenreichii on performance, carcass, and intestinal characteristics, and Escherichia coli strain O157 shedding of finishing beef steers