A kind of porcine lactic acid bacillus, probiotics, preparation method and application

Abstract

The invention relates to a porcine lactobacillus, a microecological preparation and a preparation method and application thereof, belonging to the fields of bioengineering and feed. The biological preservation number of this strain is CCTCC NO: M 2017596, and the classification name is Bacillus lactis Q-21. It is easy to colonize the intestine and grow rapidly, ensuring the quantitative advantage of intestinal beneficial bacteria and preventing the imbalance of intestinal flora. , has the characteristics of adapting to the acidic environment of the gastrointestinal tract, producing spores, and having strong stress resistance. The microecological preparation includes the above-mentioned bacterial species, and the preparation method includes inoculating the above-mentioned bacterial species in a fermentation medium, and fermenting. The preparation method is simple and effective, and can be widely promoted in production and application. The thus-prepared microecological preparation contains highly active swine-derived Bacillus lactis, and when it is applied to piglet breeding, it can reduce the pH value of the gastrointestinal tract of piglets, kill intestinal pathogenic microorganisms, and also promote feed nutrients. digestion and absorption, and improve the growth performance of piglets.

Description

technical field [0001] The invention relates to the fields of bioengineering and feed, and in particular to a porcine-derived lactic acid bacillus, a microecological preparation and a preparation method and application thereof. Background technique [0002] With the intensification of pig farming and the promotion of early weaning behavior, piglet respiratory diseases, diarrhea, streptococcus, etc. have become the most prevalent piglet diseases, and the use of antibiotics has been promoted as one of the most economical and effective treatments. However, antibiotics A series of problems such as bacterial resistance and drug residues caused by the excessive use of antibiotics have caused serious environmental pollution and seriously endangered human health. They were eventually banned by the European Union and North American countries. my country has also listed the prohibition of various antibiotics list, and there is a tendency to completely ban the use of antibiotics in the n...

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Problems solved by technology

[0002] With the intensification of pig farming and the promotion of early weaning behavior, piglet respiratory diseases, diarrhea, streptococcus, etc. have become the most prevalent piglet diseases, and the use of antibiotics has been promoted as one of the most economical and effective treatments. However, antibiotics A series of problems such as bacterial resistance and drug residues caused by the excessive use of antibiotics have caused serious environmental pollution and seriously endangered human health. They were eventually banned by the European Union and North American countries. my country has also listed the prohibition of various antibiotics list, and there is a tendency to completely ban the use of antibiotics in the near future. Therefore, finding alternatives to antibiotics has become an important direction for the current development of animal husbandry. One of the research directions

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