Preparation method of bioactive composite high-efficiency feed nutrient solution used for livestock and poultry

The invention discloses a preparation method of bioactive composite high-efficiency feed nutrient solution used for livestock and poultry. The method comprises the following steps of: inoculating bacillus coprophilus, streptococcus thermophilus, saccharomyces cerevisiae and hansenulaanomala into culture mediums to obtain four seed solutions respectively; filling 0.6-1.5 percent by weight of each of four seed solutions into an active nutrient solution which is prepared from 10-18 percent by weight of cane molasses, 0.5-1.8 percent by weight of milt cream, 10-20 percent by weight of starch and pure water through fermentation; and the feed nutrient solution is obtained after fermentation. Through the feed nutrient solution, the problems of high probability of moistening and oxidation, low probability of absorption in bodies of livestock and poultry, low material utilization rate and the like existing in the use of a solid additive are improved; a huge number of organic compounds can be decomposed; antibiotic and