Performance and intestinal coliform counts in weaned piglets fed a probiotic culture (Lactobacillus casei subsp. casei CECT 4043) or an antibiotic.

The production of biomass and antibacterial extracellular products by Lactobacillus casei subsp. casei CECT 4043 was followed in both batch and in realkalized fed-batch cultures. Enhanced concentrations of biomass and antibacterial extracellular products were obtained with the use of the latter fermentation technique in comparison with the batch mode.