Probiotics are complex biological preparations refined by fermentation, purification and drying of animal intestinal beneficial microorganisms approved by the Ministry of Agriculture. They are ideal green additives for reducing or replacing antibiotics.
First, the basic concept and types of
Probiotics is a living microbial feed additive that is a live bacterial preparation containing beneficial microorganisms and their metabolites developed according to microecological theory and functions by maintaining a micro-ecological balance in the intestine. It has many functions such as preventing and curing diseases, enhancing immunity, promoting growth, and increasing body weight, and it has no pollution, no residue, and no drug resistance.
The types of probiotics are: common probiotics, enzyme-probiotics, probiotics and probiotics. Among them, the live probiotics are the “fourth generation probioticsâ€. They are the animal-infected microbes approved by the Ministry of Agriculture. They use advanced mobile fermentation technology to refine the medicinal plants and extracts by inoculation, packaging and fermentation. Fermentation microecological preparations are ideal feed additives for reducing or replacing antibiotics.
Second, the role of probiotics
1. Competition excludes
The concept of competitive exclusion refers to the addition of a culture of selected beneficial microorganisms to the feed to compete with potentially harmful bacteria for adhesion sites and organic matrices (primarily carbon and energy). Probiotics colonize and multiply in the gastrointestinal tract, preventing adhesion of other bacteria including harmful strains such as the enteropathogenic bacteria E. coli (E. coli) or Salmonella. Undoubtedly, probiotics potentially reduce the risk of infection and intestinal disorders.
2, bacterial resistance
Probiotic microorganisms, once established in the intestine, produce bactericidal or bacteriostatic substances (bacteriocins) such as lactoferrin, lysozyme, hydrogen peroxide and several organic substances. These substances have a detrimental effect on harmful bacteria, mainly due to lower intestinal pH. The pH reduction partially compensates for the problem of insufficient hydrochloric acid secretion in weaned piglets. In addition, competition for probiotics and other bacterial energy and nutrients inhibits the growth of pathogens.
3, medicinal plants and extracts
The medicinal plants are fermented to improve the utilization rate of the active ingredients, improve the palatability, and decompose the toxic and harmful components. Play a role in stomach and digestion, and prevent disease and promote growth.
4, to prevent the accumulation of toxic substances
Through the breeding of beneficial bacteria in the digestive tract, metabolism and decomposition of toxins, such as mycotoxins, toxic amines, ammonia, bacterial toxins, ammonia free radicals, etc. There are nitrifying bacteria in probiotics, which can prevent the synthesis of toxic amines and ammonia, and purify the intestinal micro-ecological environment of animals.
3. Matters needing attention during the use of probiotics
1. Relationship with antibiotic additives: Take broilers as an example. One week after feeding probiotics at 3 days of age, use antibiotics to prevent diseases at most once, or chickens must be treated with antibiotics, and probiotics should be stopped when antibiotics are used.
2. When probiotics are added to drinking water, the animal's drinking water should be disinfected one or two days in advance. The amount of disinfectant should be reduced or prebiotics should be added before drinking.
3. Avoid using it with feeds with antibiotics, otherwise it will affect the use of probiotics.
4. This product should be used up as soon as possible after opening the package to avoid product failure.
Today, probiotics are widely used as feed additives in the feed industry and have played a positive role in preventing animal diseases, promoting animal growth and increasing aquaculture production. However, the long-term use of probiotics for feed additives can cause adverse effects such as drug resistance and residues of antibacterial drugs in animal products, which require attention.
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