Application of the hottest nano zinc oxide in the

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Application of nano zinc oxide in weaned pig feed

nanotechnology is a frontier and interdisciplinary emerging discipline developed in the late 1980s and early 1990s. Nanotechnology has brought new opportunities to the research of physics, chemistry, materials science, biology, medicine and other disciplines, and is recognized as the most forward-looking scientific research field in the 21st century. At present, nanotechnology has been applied in the fields of electronics, materials, medicine, information, biology and other disciplines, among which nano zinc oxide is the most representative functional product. The first enterprise to provide nano zinc oxide products to the market is Bayer company of Germany. At present, the main suppliers are from Japan and the United States, of which Japan is in the leading position. The research on nano zinc oxide in China started relatively late, but in recent years, due to the progress of industry and technology, as well as the high attention of domestic experts, the inclusion of the "863" plan and the "Climbing" plan have promoted the rapid development of nano zinc oxide

characteristics of nanotechnology and nano zinc oxide

nanotechnology refers to the technology of studying the structure and interaction of atoms and molecules in the range of 1nm ~ 100nm. After substances are "refined" with "nano" technology, they lose their original characteristics and directly show new physical, chemical and biological characteristics on the nano scale with atoms, molecules and substances. Nano zinc oxide is a new type of high-function fine inorganic product facing the 21st century. Its particle size is between 1nm ~ 100nm, also known as ultra-fine zinc oxide. The product has high activity and has the functions of shielding infrared ray, ultraviolet ray and sterilization. Nano zinc oxide powder can decompose freely moving negatively charged electrons and leave positively charged holes (h+) under sunlight, especially under ultraviolet radiation. This kind of hole can activate the oxygen in the air to become reactive oxygen species, has strong chemical activity, and can oxidize with a variety of organic substances (including organic substances in bacteria), so as to kill most bacteria and viruses. Relevant quantitative tests showed that when the concentration of nano zinc oxide was 1% within 5rain, the bactericidal rate of Staphylococcus aureus was 98.86%, and that of Escherichia coli was 99.93%

application effect in feed

antibacterial and bacteriostatic effect zinc is an essential element for animals. It is a component of more than 40 metalloenzymes in the body and an activator of more than 200 enzymes. It is involved in nucleic acid and protein synthesis, energy metabolism, redox, cellular immunity and humoral immunity. In addition, it is reported that zinc can promote the rapid regeneration of taste bud cells in tongue mucosa, lead the development of industry norms, and enhance appetite. Adding zinc to the diet of early weaned piglets can reduce diarrhea, increase daily gain and improve feed remuneration. Due to the increasingly restricted use of antibiotics, although the absorption and utilization rate of zinc salt is low, it has a good antibacterial effect, so it causes the abuse of zinc in production. It is understood that high zinc plays a great role in preventing diarrhea of weaned pigs. At present, feed manufacturers mostly use high zinc in weaned pig diets to prevent diarrhea of weaned pigs, and its addition has exceeded the normal requirements of animals by more than 20 times, or even higher. This will inevitably break the balance of various elements and increase the amount of other trace elements. Therefore, generally, manufacturers increase the amount of copper and iron to 160 mg ~ 250 mg per kilogram. Too many minerals in the feed will inevitably lead to a series of problems, such as the reduction of the stability of vitamins and the potency of other nutrients, which undoubtedly increases the difficulty of feed formula design, affects the feed quality, and increases the feed cost. At present, most research reports believe that only high zinc from zinc oxide sources can prevent diarrhea and promote growth, but at the same time, it is reported that the bioavailability of zinc oxide from various zinc sources is the lowest, with about 5% - 10% of weaned pigs. Most of its backward production capacity in the past was discharged from feces, which was not used, causing serious pollution to the environment. According to relevant Japanese experts, if all the zinc in pig manure is left in the soil, the zinc content will exceed the standard (120 mg/kg) within 17 years, and the polluted land will no longer be cultivable

improve production performance

nano zinc oxide, as a nano material, has the characteristics of high-efficiency water volatilization activity of raw bamboo powder, high absorption rate, strong antioxidant capacity, safety and stability, and is the most ideal zinc source at present. Substituting nano zinc oxide for high zinc in feed can not only solve the demand of animals for zinc through specific interface circuits, but also reduce the pollution to the environment. At present, animal feeding experiments on nano zinc oxide have shown the feasibility of its application in feed

the researchers studied the effects of different zinc sources on the growth performance and digestive enzymes of weaned pigs. The results showed that compared with the control group (100 mg ZnO per kg), the daily gain of the high zinc oxide (3000 mg ZnO per kg) group increased by l1.92% (P0.05). At the same time, compared with the control group, the experimental results showed that the amylase activity in pancreas increased by 0.57% when nano zinc oxide was added to the diet (P0.05). The daily gain of 3000 mg/kg ordinary zinc oxide group was 14.16% higher than that of 150 mg/kg ordinary zinc oxide group. Significant difference (P

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