Foreign feed rookies appear frequently

Introduction: with the development of animal husbandry and feed industry, foreign technicians of food science and technology have increased their investment in feed research, and various new feed products and technologies have been emerging, which has opened up a new way to accelerate the development of new fields in feed industry In order to seek new feed resources for livestock and poultry, in recent years, Russia has made great efforts to develop and use nettle as green and dry feed They use the green nettle branches and leaves to feed poultry directly, and at the same time, they make silage and dry crushed materials for preservation and use as poultry feed According to the determination, the content of carotene 140-300 mg, vitamin c1000-2000 mg, iron and manganese 3 times, copper and zinc 5 times, tannic acid, organic acid and other living substances and minerals are contained in every kilogram of dry matter in Urtica leaves and shoots The laying rate of laying hens fed with nettle increased by 18% to 25%, and the disease rate of young animals also decreased In order to improve the weight gain of Broilers and the laying rate of layers, Russian researchers, after years of research and experiments, added a certain amount of gravel to the chicken feed, and achieved remarkable results They selected the ability of insoluble granite sand, which can slow down the passing speed of food in the stomach and intestines of chickens, make the digestive fluid easier to enter the stomach, and promote better absorption of nutrients So as to improve the weight gain of Broilers and the laying rate of layers Tui in recent years, Japan has successfully made high protein feed from waste animal hair Animal hair is composed of keratin, which is difficult to digest and absorb for any livestock Therefore, animal hair is treated as waste Now, Japan's Dongguan animal products processing research institute can process these waste animal hair into high protein feed It is to add 30% water to the washed animal hair in a pressure kettle, cook it for 1 hour under 2.5kg pressure and 230 ℃ temperature, take it out from the kettle after cooling, and then get a paste like hydrolyzed protein Since keratin has been decomposed into various amino acids under high temperature and pressure, the absorption rate of effective amino acids in animals can reach 75% to 94% This "protein paste" can be added to the common feed to feed livestock, which can fully meet the needs of feed protein The comprehensive research center of Japanese aquaculture also uses seaweed to make aquaculture feed, turning waste into treasure The production method of the new feed is to ferment the fermenter which is to be salvaged from the sea with the contents of hair element, Lactobacillus and yeast After 24 hours, seaweeds can be broken down into cell size particles, such as marine plankton, which can be used as juvenile preparation and agitation loading in the farm This process is carried out without oxygen, which reduces the cost In order to improve the quality of livestock and poultry products, a Japanese food company also mixed nutmeg pepper, dried pepper, clove and ginger into the feed to feed broilers, so that their meat and chicken can be kept fresh for a longer time, and most consumers prefer its taste Tui recently developed a new technology to produce feed protein from natural gas by a Biochemical Institute in the United States The technology is divided into two steps, the first step is to convert natural gas into methanol; the second step is to use a kind of cultured methanol yeast to make methanol yeast in the culture vessel, and use methanol to synthesize single cell protein in the culture vessel The newly produced feed protein is similar to common colloidal protein This technology has opened up a new way to find a large number of feed protein resources needed by livestock and poultry breeding industry Recently, American researchers have also developed pig feed to reduce the peculiar smell of feces and feed pigs with artificial amino acid feed, which can reduce the peculiar smell of pig emissions Because ammonia is the main substance that produces peculiar smell in pig excreta, the content of nitrogen based acids such as proteins decomposed by microorganisms will be greatly reduced in the process of pig digestion Reducing the content of natural feed by 14% to 18%, and increasing the content of synthetic amino acid feed at the same time, the content of ammonia in the excreta of pigs will be reduced by 30% to 50%, and the growth of pigs will not be affected Tui Australia has developed a new type of synthetic feed for the abundant bird manure resources on the surrounding islands According to the determination, these bird droppings contain a large number of nutrients and physiological active substances which have been digested but not absorbed It is a good feed and additive raw material The preparation method is to dry the bird excrement at low temperature to retain the active substances and some enzymes, and remove the odor After grinding, a small amount of dry yeast, grains, straw powder and trace elements are added, and after stirring, the excrement is made into particles or other shapes It has been proved that the weight of calf fed with this kind of feed once reached 1.5kg-2.1kg per day, and the milk yield of cow fed with this feed is more than 12% higher than that of the control group Tui recently, Finnish researchers developed a feed to increase the vitamin D content of eggs The vitamin D content of this feed is 3.5 times of that of the general feed The hens fed this feed can produce 7 times more vitamin D than that of the general eggs, making considerable benefits Tui to meet the market demand for low fat and high nutrition milk, Brazilian researchers recently developed a new feed, which can make cows produce natural milk with low fat and high protein This new type of cow feed contains cla The substance naturally secreted and contained in milk can regulate the two enzymes that produce fat in cow body In order to solve the problem of adding CLA into feed without damaging the digestive system of dairy cattle, CLA molecules and calcium salt can be mixed into feed CLA has the function of preventing cancer and cardiovascular disease in animals and human beings The content of CLA in the milk of cow fed with CLA additive is 5 times higher than that of ordinary milk Tui