| In recent years, the development and application of micro-ecological preparations have received widespread attention from all walks of life. Micro-ecological preparation is a kind of high-quality feed additive, which has the characteristics of high safety, no pathogenicity, little side effects and complete biological functions. It contains three types of substances: probiotics, prebiotics, and synbiotics. It plays significant roles in maintaining the balance of intestinal microbial population, promoting the development of immune system and improving antioxidant capacity of organism. It can improve the production performance and health status, and is conducive to the production of high-quality products. The types of micro-ecological preparations, the mechanism of action of probiotics, prebiotics and synbiotics, the application status of micro-ecological preparations in animal production at home and abroad, and their potential for healthy breeding in karst areas were treated exhaustively. It provides references for the research direction and production application of micro-ecological preparations. |
