PROBLEM TO BE SOLVED: To grow child livestock to high performance livestock (high lactation, high breeding, high meat production, etc.).SOLUTION: In order to attain the above objective, the child livestock of good habitus (large body, and balance is maintained) is required. It is succeeded in producing such the child livestock by orally administering the fermentation object of microorganism. For the fermentation object, Lactobacillus (Lactobacillus gasseri) fermentation object and propionic acid bacterium (Propionibacterium freudenreich) fermentation object are used together.
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