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Three Ways To Reduce Zinc And Copper In Animal Feed
- Aug 07, 2017 -

  Three ways to reduce zinc and copper in animal feed

  How to understand the demand can reduce the level of zinc and copper by reducing the total level of trace elements in the feed or increasing their bioavailability.

  1. Lower the premix level

  One way to reduce the zinc and copper content in the feed is to reduce the level of these trace elements in the premix. This is possible, for example, animal feed in the broiler fattening stage. The addition of additional trace elements to the final stage of production is not necessary to supply half of the dose of zinc (100 vs. 50 mg / kg) and copper (15 vs. 7.5 mg / kg) without affecting the broiler during 0-37 days of age Production performance.

  2. Organic and inorganic mineral sources

  Another way to reduce zinc and copper content in feed is to increase the bioavailability of trace elements.

  Organic trace elements and inorganic trace elements can be distinguished. The inorganic source is mainly inorganic matter in the form of oxides, sulfates, chlorides and carbonates. The inorganic source dissociates in the low pH environment of the upper gastrointestinal tract, where the minerals are easily damaged by the confrontation of various nutrients and different components. Organic trace elements are so-called chelates that are formed by the combination of organic ligands (usually amino acids or small peptides) and minerals.

  With the content of zinc in the tibia as a reference parameter, the bioavailability of different organic zinc sources was more than 150% compared with the inorganic zinc source. Compared with inorganic copper, the role of organic copper to be weaker. The use of copper in the liver as a drinking parameter, relative to copper sulfate, copper chelate bioavailability of 112%. It should be noted that the liver of copper can be used as an indicator of copper toxicity, if the liver level of copper is too high, the body will reduce the absorption of copper. In addition, the study of the bioavailability of copper is not so extensive. Organic zinc and copper sources can also be used in combination. The two may not compete with each other in the intestinal transit protein, while the inorganic acid source will.

  Thus, as mentioned previously, the interaction between zinc and copper can be observed by using both inorganic forms, animal feed rather than using only one of the two or the organic form in which they are used. Increased bioavailability of organic zinc and organic copper is significant for reducing levels of diets and reducing excretion. However, by observing, its effect on production performance is not consistent. For broilers, it was observed that the use of organic mineral sources had an effect on body gain and had no effect on feed conversion. Through the use of organic sources, egg shell eggshell strength and thickness has increased, which is of great significance for the age of the laying hens. In egg breeds, organic mineral sources increased egg production by 4.1%, increasing the number of eggs by 4.9%.

  3. Use of phytate

  The third method is to reduce the amount of zinc and copper in the feed by using phytase. Phytophosphate is often used in poultry diets using phytate. However, amino acids, fats and zinc and copper and other mineral elements are also combined with phytate. The addition of phytate to diets can use phosphorus and other nutrients. animal feed Some studies have shown that the retention rate of zinc and copper and other minerals will increase when broiler diets are added with phytate. The European Food Safety Authority said feeding pigs with phytate to reduce the maximum zinc content in the full price by 30%. It is expected that poultry can achieve such a similar effect.

  Zinc and copper are essential nutrients, and the amount allowed in animal feed is higher than the actual demand

  We need to know that zinc and copper are essential nutrients that need to be supplemented. However, the amount of zinc and copper allowed in the EU is higher than the actual demand for animals. Thus, the level of the two in the feed can be reduced by the increase in utilization. This can be achieved by the use of zinc phytate and copper. animal feed The availability of zinc and copper can then be further increased by the use of organic zinc and organic copper sources. Organic sources are not always able to improve production performance, but because of their higher efficiency, they will form a higher retention rate of zinc and copper and a lower discharge ratio.