What are the main microorganisms in the "micro-ecological oral liquid" popular in the domestic market today? Design the experiment from the perspective of microbiology and determine its advantages and disadvantages.
The so-called microecology is mainly used in animal intestines, but now it is more and more used in plants and aquatic products, and its application scope is more and more extensive. These microorganisms mainly refer to probiotics. Traditionally, it mainly refers to the intestinal flora represented by lactic acid bacteria, and of course it also includes yeast, such as Bacillus subtilis used as feed. But in fact, it is used in different organisms, and the reference bacteria of this probiotic are also different. The same strain is specific to different organisms, beneficial to itself, and may also cause disease. Many probiotics are also conditional pathogens.
The best way to determine the advantages and disadvantages is to do physiological experiments on different animals, such as intestinal chorion growth observation and colonization experiment. There is also the experimental design of Koch principle in microbiology. Your question is rather general. For example, for laying hens, egg production and eggshell calcium can be analyzed; For economic animals that produce meat, the ratio of meat to feed can be analyzed; For livestock and poultry, the viscosity of feed manure and manure, the enzyme-producing ability of probiotic protease phytase cellulase, etc. In addition to the ratio of meat to feed, you can also take the water purification capacity as one of the indicators, and the indicators will be more specific. I hope it helps you.