Since January 2006, the EU has banned the use of antibiotics as feed growth additives, such as monensin, salinomycin and flavomycin, which are still used in China, and virginiamycin (speed fat). It is forbidden to add directly to the feed for a long time. And green additives are increasingly entering the eyes of people in the domestic and international breeding industry. Green feed additives, the most basic requirements are non-toxic side effects, no residue, but also to promote animal growth, it is best to prevent pig disease. At present, the internationally recognized growth-promoting green feed additives mainly include the following five kinds, enzyme preparations, plant source products and their extracts, microecological preparations, oligosaccharides (chemical probiotics) and yeast products (natural prebiotics), etc. The new three standards for additives are: whether it can improve the immunity of pigs, whether it is safe, and whether there is no residue. The advantages and disadvantages of the five major types of green feed additives currently used are as follows. (Southern Rural Newspaper, Agricultural News, ) Enzyme preparations need to withstand high temperatures Enzyme preparations, such as protease, amylase, xylanase, glucanase and other pure enzyme products or complex enzyme (formulation) products, are currently relatively mature. The main purpose is two, one is to make up for the lack of secretion of endogenous enzymes in piglets, and the other is to add exogenous enzymes that can digest and degrade the ingredients that pigs can not digest, mainly non-starch polysaccharides (NSP), especially wheat. Among them are xylan and dextran. The addition of enzyme preparation can improve the digestibility of nutrients in the feed, improve the ratio of meat to meat, promote growth, the use of feed enzymes is becoming more and more popular, and the products are more and more standardized. The key is quality stability and cost performance. The original use of more liquid spray enzymes also exposed some shortcomings, such as poor accuracy of liquid enzyme spray volume, the degree of atomization is difficult to be uniform, liquid enzymes easily flow away from feed particles, and external spray enzymes are susceptible to light and oxidation. The effect is oxidative inactivation. Therefore, more customers use solid enzyme preparations. (Southern Rural Newspaper, Agricultural News, ) The weather in Guangdong is hot, and the enzyme preparation must withstand certain high temperature storage and high temperature granulation treatment. Singapore's Diasham uses a unique proprietary technology, combined with the well-known original enzyme manufacturer, the American Enzyme Preparation Company (EDC), to launch the wheat enzyme, trade name, and the diamond strong BXBG enzyme, which has high activity. NSP zymogram is relatively complete (mainly for wheat xylanase and glucanase), high temperature resistance and so on. The product is sold in hot countries such as Southeast Asia (including Thailand, Indonesia) and has just entered the Guangdong market. The quality of plant extracts is uneven Plant-derived products and their extract products, although the products are natural, and some also show the role of promoting growth and preventing animal diseases during the test, but it is also reported that the test results are not accurate, possibly because the plant product composition is very complicated. There are many interference factors, and the analysis and content determination of active ingredients are difficult. It is very difficult to study. Many researches and applications are on a very superficial surface. There are few in-depth studies, and fewer mature and reliable products. Only some large foreign professional companies do some natural plant products, such as Desert King International, one of the world's largest manufacturers of plant-derived additives, using South American desert plant Lin Fenglan ( Yucca) purely physically processed Leko 40 product (DK Sarsaponins 40) with nearly ten test indicators (five unique indicators and five routine indicators) to ensure the stability and consistency of its product quality, ensuring Adequate effective active ingredient content and test efficacy guarantee value (such as B50); improve intestinal cell permeability, promote intestinal villi growth, and enhance nutrient absorption; (Southern Rural Newspaper Agricultural News, Xinmu) reduce endogenous and Exogenous ammonia gas; reducing intestinal diseases, promoting pig growth, improving meat quality, reducing stillbirth and other multiple effects, recognized and recommended by experts at home and abroad. There are many manufacturers of plant extracts such as domestic Astragalus polysaccharides, and the products are mixed, the quality is very different, and the phenomenon of shoddy filling occurs frequently, and the application is difficult to guarantee. Microecological preparations are easy to inactivate Microecological preparations have been the focus and focus of research and application, but microecological preparations must be live bacterial preparations, usually prepared by living bacteria such as lactic acid bacteria, Enterococcus faecalis, Bacillus, and Bifidobacteria. Because only direct feeding of live bacteria can have a certain effect. Dead bacteria have no effect. The live bacteria preparation is difficult to preserve, the storage period at normal temperature is very short, the live bacteria are easy to die, and it is susceptible to many factors such as temperature, humidity, antibiotics, and biological types. The effect is very inaccurate, and some reports show that some live The bacterial preparation has no effect at all. The original theoretical microbial preparations of beneficial bacteria may lose a lot of activity during transportation and preservation. In addition, the live bacteria preparation is sensitive to acid and alkali, and it is likely to be killed in the stomach and reach the intestinal tract. There are few microorganisms, and there are few exogenous beneficial bacteria that can actually colonize in the intestine. Some living bacteria cannot settle in the intestinal tract of the host animal because of the difference in biotypes, and will soon be excreted and maintain the intestines. The role of micro-ecological balance in the Tao is very limited. There are many reports at home and abroad, but the shortcomings of the above aspects have not been fundamentally solved. At present, there are few mature and reliable products. Jiangmen Duramp Electric Co., Ltd , https://www.durampled.com
Analysis of Advantages and Disadvantages of Five Kinds of Green Growth-Promoting Feed Additive