Zinc is a component of more than 40 metalloenzymes in animals, and an activation factor of more than 200 enzymes. It participates in nucleic acid and protein composition, energy metabolism, oxidative recovery, cellular immunity and humoral immunity. It is reported that zinc oxide can promote the rapid regeneration of taste bud cells in the tongue mucosa and enhance appetite. Because the use of antibiotics is more and more restricted, although zinc salts have a low absorption and utilization rate, because of their excellent antibacterial and bacteriostatic effects, zinc is used in production. The professor said: Zinc oxide plays a big role in avoiding diarrhea in weaned piglets. Feed manufacturers often add a lot of high zinc in the daily feeding guess of weaned piglets to avoid diarrhea in piglets. The increase has exceeded the normal amount of animals. Times, or even higher. Therefore, manufacturers usually increase the increase of copper and iron to 160 mg to 250 mg per kg. Too many minerals in the feed guess will inevitably lead to a series of problems such as a decline in the stability of vitamins and a reduction in the potency of other nutrients. This will undoubtedly increase the difficulty of feed formulation planning, affect the quality of feed, and increase the cost of feed.
Nano Zinc Oxide replaces high zinc with Nano Zinc Oxide in the feed, which can not only dispose of the animal’s demand for zinc, but also reduce environmental pollution. At present, animal breeding experiments on nano-zinc oxide have shown the feasibility of using nano-zinc oxide in feeding and guessing. According to relevant professors, the effect of different zinc sources on the immune and antioxidant effects of weaned piglets indicates that the immunoglobulin IgM content in the serum high-dose zinc oxide group (3000 mg per kg) and nano-zinc oxide group (300 mg per kg) ) Separation progressed by 2.97% (P <0.05) and 5.67% (P <0.01); the high-dose zinc oxide group and the nano-zinc oxide group of the metallothionein content in the liver arrangement improved by 2.81% and 2.35% compared with the control group. The experiment also indicated that, for 28-day-old weaned piglets, on the same diet basis, the increase of 150 mg / kg and 3000 mg of normal zinc oxide was compared with the increase of 150 mg and 300 mg of nano-zinc oxide per kg. Compared with the 150 mg / kg general zinc oxide group, the daily weight gain of the group increased by 18.88%, which was obviously different (P <0.05); the feed-to-meat ratio decreased by 17.7%: the diarrhea rate decreased by 177%. There was no obvious difference between the 300 mg nano-zinc oxide group per kilogram and the 3000 mg per kg general zinc oxide group (P> 0.05). The daily weight gain of 3000 mg / kg general zinc oxide group was 14.16% higher than 150 mg / kg general zinc oxide group. Significant difference (P <0.05); feed-to-fat ratio decreased by 16.57%: diarrhea rate decreased by 10.8%. It can be seen that it is feasible to replace high-dose general zinc oxide with 300 mg nano-zinc oxide per kg.In view of the nano-zinc oxide has a high biological activity and absorption rate. It has strong oxidizability and sterilization and detoxification ability, can effectively reduce diarrhea, reduce the ratio of feed to meat, and has no pollution to the environment. It is currently the most ideal feed increaser to replace high zinc. With the discussion and development of nanotechnology, the processing technology is increasingly leading and mass production, and its manufacturing cost will also decrease, so the cost of use in feeding guessing will also gradually decrease. The nano-disposal of trace elements is an innovation in trace element nutrients. It not only promotes good growth, reduces the amount of increase, saves the cost of feed, but more importantly reduces environmental pollution and benefits human health. Therefore, the prospect of nano-zinc oxide in the feed industry is very broad.