Premix coating trace elements and preparation method thereof

Abstract

The invention relates to a premix coating trace elements and a preparation method thereof. The premix coating the trace elements comprises an outer gastric or enteric coating layer and an inner trace element premix slab core, and furthermore, the inner trace element premix slab core comprises the following materials by the mass fraction of 100%: 60%-80% of compound trace elements and 20%-40% of auxiliary materials; the grain diameter of the premix coating the trace elements is 40-80 meshes; and the mass of the gastric or enteric coating layer accounts for 2-10 percent of the total mass of the premix coating the trace elements. The invention can effectively prevent ferrous iron from being oxidized into ferric iron, prevent certain trace elements from being volatilized and prevent iron ions, copper ions, zinc ions, and the like from taking catalytic oxidation effect on fats and vitamins, thereby reducing the loss of the vitamins and the decomposition of the fats, prolonging the quality guarantee period of feeds, changing the palatability of the feeds and enhancing the feed intake. Compared with the prior art, the invention can reduce the addition amount of the trace elements contained in unit feeds by 30-70 percent or more than 30-70 percent, thereby reducing the environmental pressure; and in addition, the premix coating the trace elements is a green feed additive.

Description

technical field [0001] The invention relates to a trace element premix and a preparation method thereof, in particular to a coated trace element premix and a preparation method thereof. Background technique [0002] The trace element premix for animals is a homogeneous mixture prepared by a certain proportion of copper, iron, zinc, manganese, iodine, selenium, cobalt, arsenic, boron and other trace mineral element compounds and carriers or diluents. It is an essential nutrient element for animal growth and reproduction. Adding microelement premixes to daily animal feed can effectively maintain animal health, improve animal production performance, and thus improve the economic benefits of breeding. [0003] At present, most of the trace element premix products used in the feed farming industry are mixed with powdery powder as the main raw material of inorganic acid salt or organic complex and chelate products. There are many shortcomings in actual production: [0004] 1. A ...

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Problems solved by technology

[0004] 1. A lot of dust: It is easy to cause physical damage to feed production personnel and pollute the environment

For example, sodium selenite is a dangerous product, and it is easy to cause poisoning incidents with flying dust

[0005] 2. Poor stability: Some elements in the trace element premix are volatile, such as iodine in potassium iodide is very volatile and lost, which reduces the effective iodine content in the premix; some elements are prone to oxidation-reduction reactions and become invalid. Unstable feed quality, such as divalent iron salts are easily oxidized after exposure to light, air, or moisture, and become ferric and invalid

These factors can reduce the actual trace element content in the feed and affect animal performance

[0006] 3. Low utilization rate: Ordinary inorganic salts are easily lost by combining anti-nutritional factors such as phytic acid and non-degradable mucopolysaccharides into insoluble matter, and reduce the actual utilization rate of trace elements

[0007] 4. The destructive effect of trace elements: ordinary trace elements such as copper, iron, zinc, manganese, etc. have a destructive effect on vitamins in compound feeds, especially in high-concentration premixes, which are the main factors for vitamin loss; The element is also a catalyst for the oxidation and corruption of feed fat, which will accelerate the oxidation and rancidity of unsaturated fatty acids, make the feed deteriorate, redu

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