Chromium supplementing feed additive having controlled slow release type chromium, its preparation and use method

A feed additive and slow-release chromium technology, applied in animal feed, animal feed, application, etc., can solve the problems of low absorption rate of inorganic chromium, and achieve the effects of low production cost, convenient use, and wide application range

Inactive Publication Date: 2008-12-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the absorption rate of inorganic chromium is low. Seedy (1993) reported that the absorption rate of organic chromium is about 10%-25%, while that of inorganic trivalent chromium is only 1%-3%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Grinding a commercially available ZSM-5 zeolite molecular sieve to 300 mesh, adding water and stirring evenly to make a suspension slurry with a concentration of 5%;

[0028] 2) Slowly add chromium chloride with a chromium content of 0.2% by weight of zeolite into the suspension slurry in step 1) under stirring, detect and adjust the pH value of the slurry to 4.5, and react at room temperature for 7 hours;

[0029] 3) The pH value of the detection step 2) is adjusted with a 10moL / L aqueous sodium hydroxide solution, so that the pH value of the slurry is 6.5; washed with water for 3 times, filtered and dehydrated;

[0030] 4) drying and crushing the filter cake obtained in step 3) to 300 meshes to obtain a controlled and slow-release chromium supplement feed additive, and the content of chromium in the zeolite is 0.2% by weight percentage.

[0031] Select 54 "Du Dachang" growing and finishing pigs with a body weight of about 45kg, and divide them into 3 groups accordi...

Embodiment 2

[0034] Preparation: Mesoporous molecular sieve MCM-41 was prepared according to the method of "Modification and Characterization of Mesoporous Molecular Sieve MCM-41 under Mild Conditions" (Zheng Shan, Gao Lian, Guo Jingkun. Journal of Inorganic Materials, 2000, 15(5): 844-848). 41.

[0035] 1) Grind the mesoporous molecular sieve MCM-41 obtained in the preparatory step to 300 mesh, add water and stir evenly, and make a suspension slurry with a concentration of 1%;

[0036] 2) Slowly add chromium nitrate with a chromium content of 0.5% by weight of MCM-41 into the suspension slurry in step 1) under stirring, detect and adjust the pH value of the slurry to 5.5, and react at room temperature for 10 hours;

[0037]3) The pH value of the detection step 2) is adjusted with 5moL / L potassium hydroxide aqueous solution, so that the pH value of the slurry is 7.0; washed 5 times with water, and centrifuged for dehydration;

[0038] 4) The filter cake obtained in step 3) is dried and cr...

Embodiment 3

[0043] 1) Grinding the clinoptilolite produced in Jinyun, Zhejiang to 500 mesh, adding water and stirring evenly to make a suspension slurry with a concentration of 10%;

[0044] 2) Slowly add chromium acetate with a chromium content of 0.1% by weight of zeolite into the suspension slurry in step 1) under stirring, detect and adjust the pH value of the slurry to 3.5, and react at room temperature for 4 hours;

[0045] 3) The pH value of the detection step 2) is adjusted with 0.5moL / L sodium carbonate aqueous solution, so that the pH value of the slurry is 6.0; washed 4 times, filtered and dehydrated;

[0046] 4) drying and crushing the filter cake obtained in step 3) to 600 meshes to obtain a controlled and slow-release chromium supplement feed additive, and the content of chromium in the zeolite is 0.1% by weight percentage.

[0047] Effects of controlled-release chromium on the growth and immunity of AA Nile tilapia:

[0048] Select healthy Nile tilapia with an average body...

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PUM

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Abstract

A Cr-complementing forage additive containing the controlled slow releasing Cr is an active Cr contained zeolite prepared from Cr salt and natural or artificial zeolite through adsorption, ion exchange reaction, filtering, drying and pulverizing.

Description

technical field [0001] The invention relates to a controlled and slow-release chromium supplementation feed additive and a preparation and use method thereof. Background technique [0002] Chromium is a transition metal element first discovered in 1797 by a French chemist (Louis Vanquelin). In 1957, Mertz and Schwarz first proposed the glucose tolerance factor (glucose tolerance factor, GTF) hypothesis, and in 1959 it was confirmed that chromium is an essential element for the growth and maintenance of GTF in rats. The earliest application in animals was inorganic chromium, the common one being CrCl3. However, the absorption rate of inorganic chromium is low. Seedy (1993) reported that the absorption rate of organic chromium is about 10%-25%, while that of inorganic trivalent chromium is only 1%-3%. More research is now on organic chromium, and the common ones are picoline chromium, nicotinic acid chromium, and yeast chromium. [0003] The biological function of chromium:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/16A23K20/28
Inventor 夏枚生胡彩虹姚志通
Owner ZHEJIANG UNIV
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