What is the difference between organic zinc and inorganic zinc?
Feed zinc sources include inorganic zinc and organic zinc. Inorganic zinc mainly includes zinc chloride, zinc sulfate, zinc carbonate and zinc oxide, while organic zinc refers to the complex or chelate formed by organic ligands, such as Zinc gluconate, zinc methionine, etc. Different forms of zinc are available in organisms at different rates. Sandoval (1990) fed sheep with high zinc and measured the utilization rates of different forms of zinc based on zinc concentrations in the liver, kidney and pancreas. The result was that the utilization rate of zinc in zinc sulfate was 100%, while zinc oxide, zinc carbonate and metal The relative utilization rates of zinc were 135%, 136% and 95% respectively. Wang An (1993) evaluated the biological potency of zinc from different sources to broilers and found that the biological potency of inorganic zinc compounds was higher than that of plant feed zinc. The potencies of zinc sulfate and zinc oxide are close, and the utilization rate and precipitation rate of zinc gluconate are higher than zinc sulfate, zinc oxide, zinc chloride, and zinc nitrate. When Wedekind (1990) measured the zinc utilization rate of chicks through the concentration of tibial zinc, he found that the utilization of zinc methionine was 77% to 106% higher than that of zinc sulfate.
1. The method of zinc supplementation can be to add inorganic zinc or organic zinc to the feed. Inorganic zinc mainly includes zinc sulfate, zinc oxide, zinc carbonate, etc. Organic zinc refers to the formation of organic ligands. Complexes or chelates, such as zinc gluconate, zinc methionine, etc. Different forms of zinc have different utilization rates in the body. Generally speaking, the biological potency of inorganic zinc is lower than that of organic zinc, while organic zinc has lower Conjugate zinc with amino acids.
2. Organic zinc refers to the complex (such as zinc glucate) or chelate (such as zinc methionine) formed by zinc and organic ligands. Amino acid zinc chelates have become today’s The main development trends of trace element zinc additives.
Zinc supplement products can be divided into three major categories: inorganic zinc, organic zinc, and biological zinc. These are also three different stages of the development of zinc supplement products:
☆First-generation inorganic zinc: Such as zinc sulfate, which is the most original zinc supplement product. Due to its low bioavailability (only 7%) and obvious side effects, it is now mostly used in surgical operations to promote wound healing.
☆Second generation organic zinc: such as various amino acid zinc, zinc lactate, zinc licorice, zinc citrate, zinc gluconate, etc., with a bioavailability of 14%. Due to this type of chemical zinc It is irritating to the gastrointestinal tract and is generally required to be taken after meals, which is more suitable for adults;
☆New generation of biological zinc: such as yeast zinc, which is made of zinc sulfate or zinc gluconate It is obtained by feeding yeast with feed. The yeast absorbs and transforms zinc during the growth process, combining zinc with yeast proteins and polysaccharides to form a pure biological form of zinc. There are many varieties of zinc supplement products on the market, but they basically fall into the category of inorganic zinc and organic zinc. The bioavailability of these two types of zinc supplement preparations is low, usually only 7-14%. The decomposed residues (such as sulfate, gluconate, etc.) are very irritating to the gastrointestinal tract and have certain side effects. Children’s intestines and stomach are very immature, so they should be taken with caution.
