AN IMPROVED METHOD FOR SELECTING PROBIOTICS

Provided is an improved method for selecting a probiotic microorganism composition, the method comprising providing a first consortium of microorganisms having Microorganism Composition A; providing a first host animal having a first microbiome having Microorganism Composition B; administering said first consortium to said first host animal, whereby said first microbiome is converted to a second microbiome having Microorganism Composition C; collecting a first sample of said second microbiome; and transferring at least a fraction of said first sample and/or said treated first sample onto and/or into a growth medium and incubating at a temperature between 15 degrees Celsius and 70 degrees Celsius to form first selected microorganism composition having Microorganism Composition D; wherein Microorganism Composition A of said first consortium comprises at least 50 different strains; wherein each of Compositions A and B; B and C and D and A differ from each other.