ACTIVIDAD ANTIMICROBIANA DE UNA MEZCLA PROBIóTICA DE EXCLUSIóN COMPETITIVA Y SU ESTABILIDAD EN EL TIEMPO

the in vitro antimicrobial activity against pathogenic potentially bacteria from a competitive exclusion mixture (cem) and its stability in time were determined. to obtain cem, five adult and healthy broilers from h2 hybrid of 45 days of age, were sacrificed. the in vitro antimicrobial activity of cem against indicator strains and its stability during storage at different temperatures were determined. finally, a microbial quality analysis of cem was carried out. growth inhibition of all indicator strains was observed by acid production (variant 1), except from lactobacillus salivarias. cem showed a high level of acetic, propionic and butiric acids. a high grow capacity and satiability was demonstrated during 30 days of cem storage under refrigeration and environmental conditions,as well as a good microbial quality.