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Zinc is a component of more than 40 metalloenzymes in animals. It is a activator of more than 200 enzymes and participates in nucleic acid and protein composition, energy metabolism, oxidative recovery, cellular immunity, and humoral immune processes. According to reports, zinc oxide has the effect of promoting the agile regeneration of tongue mucosal bud cells and enhancing appetite. Because the use of antibiotics is increasingly limited, zinc salts, despite their low absorption and utilization, are used indiscriminately in the production of zinc because of their excellent antibacterial and antimicrobial activity. The professor said: Zinc Oxide plays a very important role in avoiding diarrhea in weaned pigs. Feed manufacturers often increase the amount of high zinc in the weaned piglets to avoid diarrhea in the daily diet. The increase has exceeded the normal requirement of animals. More than 20 times, even higher. Therefore, manufacturers usually increase the amount of copper and iron to 160 mg to 250 mg per kilogram. The excessive supply of minerals in the diet will surely lead to a series of problems such as the decrease of the stability of vitamins and the decline in the titer of other nutrients. This undoubtedly increases the difficulty of formulating feed formulations, affects the quality of feed, and increases the cost of feed.
Nano-zinc oxide substitutes zinc oxide with nano-zinc oxide to replace zinc, which not only can dispose of the animal's demand for zinc, but also reduces environmental pollution. At present, animal breeding experiments on nano-zinc oxide have demonstrated the feasibility of using nano-zinc oxide in feeding. According to relevant professors, the effect of different sources of zinc on immunity and antioxidation of weaned pigs was tested. The results showed that the level of serum immunoglobulin IgM was higher in the zinc oxide group (3000 mg/kg) and nano zinc oxide group (300 kg/kg). In milligrams, the difference between the high-dose zinc oxide group and the nano-zinc oxide group was 2.81% and 2.35%, respectively, compared with the control group. The experiment also indicated that: for 28-day-old weaned pigs, the average daily increase in the amount of 150 mg/kg and 350 mg/kg/kg nano zinc oxide/kg/nm nano zinc oxide was increased on the same diet. In the zinc group, the daily weight gain of the general zinc oxide group was increased by 18.88% compared with the 150 mg/kg group, and the difference was significant (P<0.05); the feed-to-meat ratio was decreased by 17.7%; the diarrhea rate was decreased by 173%. There was no significant difference between each kg of 300 mg nano zinc oxide group and 3000 mg general zinc oxide group per kg (P>0.05). The daily gain per kg of the 3000 mg general zinc oxide group was 14.16% higher than the daily zinc oxide gain per kg 150 mg general zinc oxide group. Significant difference (P<0.05); feed-to-meat ratio decreased by 16.57%; diarrhea rate dropped 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 kilogram.
In view of nano-zinc oxide has a very high biological activity and absorption rate. Strong oxidative and sterilizing detoxification ability, can effectively reduce diarrhea, reduce the ratio of feed and meat, and no pollution to the environment, is the current ideal alternative to high zinc feed additive. With the research and development of nanotechnology, the increasing production of processing technology and the production of large quantities, the cost of its shaping will also decline, and therefore the cost of using it will gradually decline. The microelement nano-disposal is an innovation in the micronutrient nutrient content. It not only promotes good growth, increases the amount, and reduces the cost of feed. What's more important is the reduction of environmental pollution for the well-being of mankind. Therefore, the use of nano-zinc oxide in the feed industry has a very wide prospect.