Microecological preparations, enzyme preparations and natural plant extracts are currently the most promising new feed additives, but the preparation process still needs to be perfect, and the quality standards need to be unified. Feed additives are important for animal nutrition, physiology, intestinal microecology, and immune function. Research on the impact of such mechanisms and their mechanisms also needs to be strengthened. O-Phosphorylethanolamine suppliers told us that It is inevitable for the development of additives to make full use of low-quality, cheap and widely-sourced feed resources that cannot be directly used by humans, and to introduce modern biotechnology transformation and large-scale production of new bio-source feed additives with technical content trend.
2-Aminoethyl Dihydrogen Phosphate suppliers told us that Feed additives are divided into two types of nutritional additives and non-nutritive additives. Its basic function is to maintain animal health, promote animal growth, and improve animal production performance. In order to pursue economic returns, the role of feed additives in promoting animal growth in the past has been overemphasized, and neglecting long-term harms such as drug residues of animal products and drug resistance of pathogens. With the European Union, the United States and other regions and countries banning the use of hormones and antibiotics as feed additives, especially China's increased pressure on food safety and environmental protection since joining the WTO, the development of new types of safe feed additives has received increasing attention. Safe feed additives should have no drug residues during animal production, no toxic or side effects, no harm to animal production, animal products that are not harmful to human health, and animal excreta that do not pollute the environment. New feed additives that have been developed and are under development mainly include microecological preparations, enzyme preparations, low molecular weight sugars, and Chinese herbal medicine preparations. In order to rationally develop and apply these new additives, it is necessary to make a comparative analysis of their respective development prospects and actual application effects.
2-Aminoethyl Dihydrogen Phosphate manufacturers help us to know the types and properties of additives
1.1 Microecological preparations
Microecological preparations are live bacteria preparations made of beneficial bacteria that make up the normal flora in animals. They are called probiotics. They help digestion, synthesize essential vitamins for animals, scab pathogenic microorganisms, and stimulate the normal development of the immune system. The purpose of animal growth. These bacteria include many lactic acid bacteria members of the genus Lactobacillus and Streptococcus, which can make full use of the adhesion and reproduction of live bacteria in the body, without any pollution to the environment, can improve the utilization of feed, improve the quality of animal products, reduce the ammonia content of manure, and purify Water environment.
However, most of the live bacteria preparations are anaerobic bacteria, which are difficult to ferment. During the storage and transportation process, oxygen and high temperature make them inactivated a lot. They cannot be used in combination with antibiotics and may be inactivated by gastric acid. The quality standards need to be unified .
1.2 enzyme preparation
Enzyme preparations include various hydrolases (digestive enzymes) such as amylase, protease, glucanase, pectinase, hemicellulase, cellulase, glucose oxidase, lysozyme, phytase (for monogastric Animal), xylanase, cytolytic enzyme, and isomerase . The enzyme preparation can supplement the shortage of endogenous enzymes in the body and decompose the anti-nutritional factors in the feed, but it has a specific effect. Generally, the application effect of the compound enzyme is better than that of the single enzyme.
Since the enzyme is prone to lose its activity during feed processing, preservation, etc., it is necessary to use site-directed mutagenesis technology or make specific dosage forms in order to protect the enzyme activity. At present, it is necessary to make a unified specification for the index of enzyme activity and its measurement method.
1.3 Natural plant extracts
Due to its special physiological structure, yucca extract has a strong adsorption capacity for harmful gases, which can reduce the concentration of harmful gases such as ammonia and hydrogen sulfide in the barn, improve the animal breeding environment, improve health, and improve animal production performance. Therefore, it has been widely studied and used in animal production. In addition, yucca saponins affected the protozoa's engulfment of bacteria through its inhibitory effect on the intestinal protozoa, which increased the number of fibrolytic bacteria in the intestine, and contributed to the fermentation and degradation of cellulose in the later stage of the digestive tract.
According to Chinese applied pharmacology records: Yucca saponin has a broad-spectrum antibacterial effect, and it has effects on hemolytic Staphylococcus aureus, hemolytic streptococcus, pneumococcus, dysentery, typhoid, paratyphoid, vibrio cholerae, and E. coli , Proteus, Pseudomonas aeruginosa, Pertussis and their common pathogenic skin fungi have strong inhibitory properties.
Yucca saponins can enhance the immune response by increasing the intestinal mucosa's intake of antigens, and can also combine with the antigens to form complexes to prevent the antigens from being digested and degraded.
Different types of feed additives have their own advantages and disadvantages. In the process of phasing out antibiotic additives, new additives that are pure natural, non-toxic, safe for humans and animals, and non-polluting to the environment should be targeted. Microecological preparations are composed of viable bacteria that can reproduce, and should be developed towards gastric acid resistance, high temperature resistance, digestive enzyme resistance, strong intestinal colonization ability, and compound type. Enzyme preparations are the safest, but the common problems of increasing and protecting enzyme activity need to be addressed. Low-molecular-weight sugars represented by fructooligosaccharides, xylooligosaccharides, and chitosan can promote the growth of beneficial bacteria in the intestine, but in the long run, it should strengthen the rich sources and selectively promote the growth of probiotics Research work on the screening of low-molecular-weight sugars that reproduce, reduce fat absorption, and effectively stimulate mucosal immunity.