Preliminary studies to design a probiotic for use in swine feed

Résumé 0

"During inhibitory activity screening of 100 strains of lacticacid bacteria isolated from the gastrointestinal tract of pigs onlysix, four identified as Enterococcus faecium and two as Lactobacillusacidophilus, showed inhibition against enteric indicatorstrains: Salmonella enteritidis, S. cholera suis, S. typhimuriumand Yersinia enterocolitica. The inhibitory action was not affectedby the addition of catalase and no inhibition was detectedafter neutralizing the supernatant culture fluid. Furthermore, these two L. acidophilus showed agglutination with treated yeast.The agglutination of one strain was inhibited by maltose, thissuggests the presence of a lectin-like structure in their cell walls,which could be responsible for its adhesion ability. The selectedstrains were resistant to pH 3.0 and bile salts. These strains fulfilthe conditions of probiotic bacteria and could be selected forelaborating pig probiotic feed, in order to prevent infectious diseases."