Preparation method and application of biosynthesized composite organic trace elements

Abstract

The invention discloses a preparation method and an application of biosynthesized composite organic trace elements. The method comprises the following steps: (1) separately preparing every single bacterial liquid; (2) preparing a mixed bacterial liquid from all the bacterial liquids prepared in step (1); (3) adding a composite inorganic trace element material to a carrier material to prepare a fermentation substrate; (4) mixing the mixed bacterial liquid with the fermentation substrate to obtain a material to be fermented; and (5) performing sealing fermentation on the material to be fermentedto obtain the composite organic trace element material. An application method of the prepared composite organic trace element material is characterized in that 2.5-5 wt% of the composite organic trace element material is added into a conventional diet feed free from trace elements in order to prepare a compound feed. The composite organic trace elements prepared in the invention can improve the absorption and utilization ratio of trace elements, reduce the addition amount of trace elements in the feed, reduce the pollution of the emission of trace elements to soil, improve the production performance of animas and reduce the breeding cost.

Description

technical field [0001] The invention belongs to the field of biotechnology and feed production, and specifically relates to a method for biosynthesizing and compounding organic trace elements and its application. Background technique [0002] Trace elements are nutrients that must be added to livestock and poultry animal feed. They can directly or indirectly participate in almost all physiological and biochemical activities of livestock and poultry animals. important role. For a long time, trace elements in livestock and poultry feed have been added in the form of inorganic minerals. Experiments have shown that: (1) The absorption and utilization rate of trace elements is low, generally not more than 20%, by adding inorganic minerals to supplement trace elements. As a result, a large amount of trace elements are discharged, causing heavy metal pollution in the environment; (2) poor palatability, because metal minerals have a bitter taste or a unique smell, which affects the...

AI Technical Summary

Problems solved by technology

For a long time, trace elements in livestock and poultry feed have been added in the form of inorganic minerals. Experiments have shown that: (1) The absorption and utilization rate of trace elements is low, generally not more than 20%, by adding inorganic minerals to supplement trace elements. As a result, a large amount of trace elements are discharged, causing heavy metal pollution in the environment; (2) poor palatability, because metal minerals have a bitter taste or a unique smell, which affects the feed intake of livestock and poultry; (3) instability, inorganic minerals enter the digestive system , forming the free state of metal ions, which are easy to combine with oxalic acid and phytic acid to form insoluble matter with stable structure, thus causing the loss of vitality of trace elements; activity, reducing its efficacy

[0003] Organic trace elements are metal ions and organic compounds such as proteins, small peptides, amino acids, organic acids, polysaccharides, etc. through covalent bonds or ionic bonds to form stable chelates or complexes. Practice has proved that organic trace elements can improve animal health. The production performance of poultry and the improvement of meat quality, etc., but at present, the synthesis of organic trace elements is mainly obtained by physical and chemical methods, which requires a multi-step process, and needs to control different pH in each link, the operation is complicated, and the waste generated more, causing pollution to the environment. At the same time, the organic trace elements obtained by physical and chemical methods are generally single or two types of organic trace elements, and it is impossible to obtain a compound of multiple organic trace elements at the same time. Therefore, the feeding value is single and the cost is low. high