Preparation method of full-valent microbial fermented feed for pregnant sows

The invention provides a preparation method of full-valent microbial fermented feed for pregnant sows. The preparation method comprises the step as follows: the fermented feed is prepared from a bacteria solution and basic feed by mixing and fermentation in a closed environment in sequence, wherein the basic feed is prepared from corn, soybean meal, bran and a premix, and the bacteria solution isprepared from a starter and water. Furthermore, the invention provides the starter. The starter contains lactobacillus fermentum, clostridium butyricum, bifidobacterium bifidum, enterococcus faecium,pediococcus acidilactici and streptococcus thermophilus. Fermentation of the feed or feed raw materials can be promoted, substances such as crude protein, crude fat, crude ash and the like in the feedor the feed raw materials in original feed are decomposed by microorganisms, and content of calcium, phosphorus and the like is changed to a greater degree. Meanwhile, bacteria or metabolites of thebacteria have an antibacteri