Organic selenium-supplementing feed additive and preparation and using method thereof

A feed additive and selenium supplement technology, applied in the direction of animal feed, animal feed, application, etc., to achieve the effect of effective absorption, improving animal disease resistance and production performance, and high bioavailability

Inactive Publication Date: 2010-11-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been reported that it is used as a feed additive in the feed industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Under stirring at 10°C, add chitosan with a deacetylation degree of 70% to 0.5% dilute acid by volume to form a 0.5% chitosan acid solution; then add selenous acid to the chitosan acid solution Sodium solution, wherein the mass of sodium selenite is 1 / 6 of the mass of chitosan, reacted for 1h, filtered, and the obtained solid matter was washed with distilled water for several times until no selenium ions were detected, dried, and pulverized to obtain the organic supplement Selenium.

Embodiment 2

[0017] Under stirring at 60°C, add chitosan with a deacetylation degree of 100% to 2% dilute acid by volume to make it into a 10% chitosan acid solution; then add selenous acid to the chitosan acid solution Solution, wherein the mass of selenous acid is 1 / 2 of the mass of chitosan, reacted for 12h, centrifuged at 3000rpm, and the precipitate obtained was washed with distilled water for several times until no selenium ion was detected, dried and pulverized to obtain organic selenium supplement agent.

Embodiment 3

[0019] Under stirring at 10°C, add chitosan with a deacetylation degree of 70% to 0.5% dilute acid by volume to form a 0.5% chitosan acid solution, then add inorganic selenium, BaCl 2 ·H 2 O and CaCl 2 ·6H 2 O, of which inorganic selenium, BaCl 2 ·H 2 O and CaCl 2 ·6H 2 The quality of O is 1 / 6 times that of chitosan. Add nitric acid dropwise to react for 4 hours. The amount of nitric acid is 1 / 4 times the amount of chitosan acid. After cooling, slowly add dilute sulfuric acid until no white precipitate is produced. Centrifuge Take the filtrate by filtration, then add FeCl 3 The solution was centrifuged to obtain the filtrate. Adjust the pH to 6-7, let stand, centrifuge and take the filtrate, precipitate and purify with absolute ethanol, and dry to obtain the selenized chitosan sample

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PUM

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Abstract

The invention discloses an organic selenium-supplementing feed additive and preparation and a using method thereof. The feed additive is prepared by the following steps of: adding chitosan with deacetylation degree of 70 to 100 percent into 0.5 to 2 volume percent of diluted acid with stirring at the temperature of between10 and 60 DEG C to obtain 0.5 to 10 percent acid solution of chitosan; adding solution of inorganic selenium into acid solution of chitosan, wherein the mass of inorganic selenium is 1/6 to 1/2 time that of the chitosan; and reacting for 1 to 12h and separating, washing the obtained solid matter by using distilled water for many times until selenium ions cannot be detected, and drying and crushing to obtain chitosan selenium chelate. The chitosan selenium serving as the feed additive is applied to feeds for livestock, poultry and aquatic animals and is effectively absorbed and utilized in the animals by using proper stability and dissolution performance thereof, so that disease resistance, production performance and meat quality of the animals are obviously improved. The chitosan selenium has the advantages of little toxicity, high biological availability, small addition amount, and capability of saving resources and protecting the environment, so that the feed additive is a safe and effective environment-friendly feed additive.

Description

technical field [0001] The invention relates to a feed additive, in particular to an organic type selenium-supplementing feed additive and a preparation and use method thereof. Background technique [0002] Selenium has long been listed as one of the essential trace elements for human body and animals. Human research on selenium shows that selenium is the active ingredient of cell glutathione peroxidase (GSH-Px), which can inhibit and eliminate The active oxygen produced during the metabolic process prevents lipid peroxidation in the body and oxidative damage to biofilms, protects cells, and plays a role in metabolism and immune regulation. An appropriate amount of selenium contributes to the health of human and animal organisms. When human selenium is malnourished, the incidence of more than 40 diseases such as arthritis, cancer, and cardiovascular disease will increase significantly. When animals are deficient in selenium, symptoms such as nutritional muscle atrophy, liv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/16
Inventor 韩新燕谢正军朱叶萌
Owner ZHEJIANG UNIV
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