Peptide feed additive for improving intestinal environment and preparation method thereof

The present invention belongs to a peptide feed additive for improving intestinal environment and a preparation method thereof. The feed additive comprises the following raw materials in percentage by weight: 20-30% of antibacterial peptides, 5-10% of mannatide, 10-20% of active dry yeast, 10-20% of acidifiers, 10-20% of enzyme production probiotics and the balance of anhydrous sugar. By adding peptides into the feed, the peptide feed additive can activate beneficial bacteria and inhibit harmful bacteria, regulate gastrointestinal bacterial flora balance and protect intestinal mucosa to improve intestinal environment and enhance disease resistance. The peptide feed additive is safe and effective, and has no residue and no drug resistance. The raw materials used for the mixture in the invention are rich in sources, and the production process is simple. The peptide feed additive is easy to absorb after entering the body, is convenient for clinical administration, is suitable for crowd administration, and saves manpower and material resources. The peptide feed additive has characteristics of clear drug content, precise administration and controllable quality.