(1) The secretion of antibacterial substances or the bacteriostatic environment causes the pathogenic bacteria to not proliferate. For example, the antibacterial substances produced by Lactobacillus include organic acids, hydrogen peroxide (H2O2), dimethicone and bacteriocin, etc., which can lower the pH value in the environment or directly inhibit the pathogenic bacteria and prevent them from proliferating.
(2) Stimulating the occurrence of an enzyme reaction related to detoxification.
(3) Stimulating or supplying the enzymes required for the digestion of anti-nutritional substances. Feed additives
(4) Synthesizing water-soluble vitamins or other nutrients.
(5) inhibiting the formation of toxic or carcinogenic metabolites.
(6) Increase the immunity of the host animal.
However, the above mechanism is the result of a total combination, which is not provided by a specific probiotic strain, and the selection of probiotics is characteristic of its determinant. The strains used for probiotics need to be generally recognized as safe strains.