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Silage rich in organic selenium

A technology of silage and organic selenium, which is applied in the preservation method and application of animal feed and animal feed raw materials, can solve the problems of difficult absorption, high price, improper use, etc., to promote healthy growth, improve production performance, and enhance resistance. force effect

Active Publication Date: 2010-06-16
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, people have used inorganic selenium-sodium selenite as the main selenium source, and its price is cheap, but there are many disadvantages in the use of sodium selenite: ①It has potential hazards to the health of workers in feed mills; ②If it is used improperly, Animals are prone to poisoning; ③Like many inorganic trace elements, they are not easily absorbed by the intestines, and the unabsorbed selenium is excreted through feces, which will pollute the environment
However, the price of organic selenium yeast is relatively expensive, which will obviously increase the production cost of dairy cows and limit the promotion and application of organic selenium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] (1) Bacteria

[0032] Saccharomyces cerevisiae: purchased from the Collection Center of Microorganisms, Institute of Microbiology, Chinese Academy of Sciences, with the strain code CICC 31011.

[0033]Streptococcus Thermophilus: purchased from the Collection Center of Microorganisms, Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS1.2471.

[0034] (2) Slant activation medium

[0035] Saccharomyces cerevisiae activation medium (YPD): 20g glucose, 5g yeast extract, 10g peptone, 20g agar, 1000ml water, initial pH 6.7, 115°C high pressure steam sterilization for 15min, set aside.

[0036] Streptococcus thermophilus activation medium (MRS): peptone 10g, yeast extract 5g, glucose 20g, beef extract 10g, sodium acetate 5g, diammonium citrate 2g, Tween-80 1ml, MgSO 4 ·7H 2 O 0.02g, MnSO 4 ·4H 2 O 0.05g, K 2 HPO 4 2g, 20g agar, 1000ml water, adjust pH=6.2~6.4; 115°C, high pressure steam sterilization for 15min, set aside.

[0037] (3) No ag...

example 2

[0056] (1) Bacteria

[0057] Saccharomyces cerevisiae: purchased from the Collection Center of Microorganisms, Institute of Microbiology, Chinese Academy of Sciences, with the strain code CICC 31011.

[0058] Streptococcus Thermophilus: purchased from the Collection Center of Microorganisms, Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS1.2471.

[0059] (2) Slant activation medium

[0060] Saccharomyces cerevisiae activation medium (YPD): 20g glucose, 5g yeast extract, 10g peptone, 20g agar, 1000ml water, initial pH 6.7, 115°C high pressure steam sterilization for 15min, set aside.

[0061] Streptococcus thermophilus activation medium (MRS): peptone 10g, yeast extract 5g, glucose 20g, beef extract 10g, sodium acetate 5g, diammonium citrate 2g, Tween-801ml, MgSO 4 ·7H 2 O 0.02g, MnSO 4 ·4H 2 O 0.05g, K 2 HPO 4 2g, 20g agar, 1000ml water, adjust pH=6.2~6.4; 115°C, high pressure steam sterilization for 15min, set aside.

[0062] (3) No ag...

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Abstract

The invention relates to a method for preparing silage rich in organic selenium and belongs to the technical field of silage production. Streptococcus thermophilus, beer yeast and sodium selenite into silage are added in silage raw materials; and in the process of fermenting the silage, the sodium selenite is converted into selenomethionine by microbes added into the silage and original microbes to finally obtain the silage rich in the organic selenium (the content of the organic selenium is improved to over 0.02 mg.Kg<-1> from original 0.01), and the quality of the silage is improved simultaneously (the content of crude protein is improved and the content of ammoniacal nitrogen is reduced). The silage can achieve the aim of replenishing the organic selenium while providing high-quality silage for herbivores, thereby improving the immunity and anti-oxidation capacity of animals, strengthening the resistance of the animals to diseases, improving the production performance of the animals, and promoting the healthy growth of the animals.

Description

technical field [0001] The invention relates to a preparation method of organic selenium-rich silage, and belongs to the field of silage production. Background technique [0002] Selenium is one of the essential trace elements for animals, and its biological function is that it is a component of glutathione peroxidase in animals. Selenium is closely related to the growth and development, reproduction and disease occurrence of animals. Studies have shown that selenium has anti-oxidation, improves immunity and disease resistance, regulates body metabolism, affects the reproductive function of animals and humans, anti-tumor, prevents and cures endemic diseases (such as Keshan disease, Kashin-Beck disease), delays aging, and antagonizes toxic elements, etc. [0003] Insufficient selenium content in the diet will affect the normal physiological function of animals, reduce the immunity of animals, and induce the occurrence of various diseases. If the selenium content in the diet...

Claims

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Application Information

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IPC IPC(8): A23K3/03
Inventor 黄克和王阳光任志华
Owner NANJING AGRICULTURAL UNIVERSITY
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