![]() For instance for a zinc complex in this category, the blend would include zinc methionine, zinc lysine, zinc leucine, zinc cystine, etc. Each individual molecule is still one metal ion and one amino acid but has a variety of amino acids in the blend. Metal amino acid complexes: These are characterized by a metal atom (zinc for instance) complexed with several single amino acids. ![]() These complexes are most effective and efficiently absorbed in gut among all the organic minerals. Other such common complexes include copper lysine and manganese methionine. For instance, one of the most common metal complexes is zinc methionine which is produced by combining zinc sulfate and amino acid methionine. These are the products resulting from complexing a soluble metal salt with a specific amino acid. Metal (specific amino acid) complexes.Different categories of organic trace mineralsĬategories of organic trace minerals as defined by Association of American Feed Control Officials (AAFCO, 1998) include: Another potential application of the organic mineral sources is reduction in their excretion and thereby reduction in the environmental pollution. Supplementation of organic mineral complexes is reported to improve animal production. Common organically bound trace minerals used in animal nutrition are iron, copper, zinc, manganese, chromium and selenium. When minerals are bound to chelating agents such as amino acids or hydrolysed proteins they become more stable and less reactive in the digestive tract. One of the reasons for increased bioavailability of organic minerals is that they are protected from such interactions. The inorganic minerals may interact with fibre, phytate, tannin, oxalate, silicates or other minerals in the gastro-intestinal tract, which may interfere with their absorption. Mineral chelates are organic trace minerals designed to enhance gut absorption and improve bioavailability. The other category is often referred to as “chelates”. Inorganic sources are the common sulphates, oxides, chlorides, carbonates of the element and they can differ in their bioavailability. Two broad categories of sources are available to supplement trace elements: inorganic and organic sources. Trace elements have an important role in various metabolic events in the body. Gowda, Division of Animal Nutrition, National Institute of Animal Nutrition and Physiology, Bengaluru, India 560 030 Description
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