The invention relates to a butyrin complex for 
livestock and a preparation method and application of the butyrin complex. The butyrin complex for 
livestock consists of the following components in parts by weight: 100-300 parts of 
glycerol monobutyrate, 100-300 parts of 
glycerol polybutyrate, 50-150 parts of radix 
codonopsis pilosulae, 50-150 parts of poria, 50-150 parts of fried 
atractylodes macrocephala, 50-150 parts of Chinese yams, 50-100 parts of white 
hyacinth beans, 30-70 parts of fructus amomi, 50-150 parts of viable organisms of 
bifidobacterium, 50-250 parts of viable organisms of 
bacillus subtilis, 50-150 parts of viable organisms of 
lactobacillus and 100-200 parts of 
selenium yeast. The preparation method of the butyrin complex for 
livestock comprises the following steps: 
grinding the traditional Chinese medicines into 
powder, performing 
microorganism fermentation drying, performing superfine wall breaking crushing, and mixing materials. The butyrin complex for livestock, which is provided by the invention, is applied to livestock feeding, has the effects of improving the body 
immunity of animals and inhibiting 
reproduction of harmful 
bacteria, is capable of greatly increasing the laying rate and 
fertility rate, is free of toxic or 
side effect and is safe and reliable.