Feed additive for improving immunity of weaned piglets, and preparation method thereof

Abstract

The invention discloses a feed additive for improving the immunity of weaned piglets, and a preparation method thereof. The feed additive is prepared from a component A and a component B through a solid state fermentation process; during fermentation, the mass ratio of the component A to the component B is 1:15 to 1:30, wherein the component A is a mixed strain comprising at least two probiotic seed solutions; the colony count of each probiotic is greater than 108 CFU / ml; and the component B at least comprises one or a mixture of two of codonopsis pilosula and astragalus membranaceus. The feedadditive for improving the immunity of the weaned piglets provided by the invention is a Chinese herbal medicine additive fermented by probiotics; release of immunologic active substance polysaccharide and synthesis of small peptides can be promoted; the content of polysaccharide before and after fermentation is 2.35% and 2.98% respectively; the content of the small peptides is improved to 6.42%from 4.97%; the immunity and disease resistance of organisms are effectively improved; and the feed additive is an ideal antibiotic substitute product after the feed is completely prohibited.

Description

technical field [0001] The invention relates to a feed additive, in particular to a feed additive for improving immunity of weaned piglets. The invention also relates to a preparation method of the feed additive. Background technique [0002] Due to changes in the environment, stress and dietary form, piglets are prone to indigestion at weaning, resulting in diarrhea, slow growth, and even death. According to relevant data reports, in my country's small and medium-scale pig farms, the diarrhea rate of piglets during weaning is as high as 50% to 60%, and the mortality rate is as high as 15% to 20%. Diarrhea in weaned piglets has caused huge economic losses to pig production. [0003] In the past, it was common practice to add antibiotics or chemically synthesized drugs to feed to prevent or alleviate diarrhea in weaned piglets, but these drugs would cause pathogenic microorganisms to develop resistance and lead to antibiotic residues in animal products, which brought huge hi...

AI Technical Summary

Problems solved by technology

However, because the active ingredients of traditional Chinese medicine are in the cytoplasm, it is difficult for the traditional Chinese medicine powder to play a role through the cell wall, and the injection is also likely to cause a strong stress reaction in the individual.

In addition, most of the active ingredients of traditional Chinese medicine are macromolecular substances, which are not easy to be absorbed through the blood-brain barrier; and traditional processing methods such as decoction, boiling, refining, and soaking are difficult to meet the needs of large-scale production in the aquaculture industry, which means that Chinese herbal medicine is not easy to be absorbed in large-scale aquaculture. There are still obstacles to the application in the industry

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