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Trace element chromium forage additive, prepn. method and use thereof

A feed additive and trace element technology, applied in animal feed, animal feed, application, etc., can solve the problem of low absorption rate of inorganic chromium, and achieve the effect of simple implementation method, convenient use and improved feed utilization rate

Inactive Publication Date: 2007-02-14
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

[0023] 1) Place commercially available 001×7 strongly acidic styrene-based cation exchange resin (this product is equivalent to AmberrliteIR-120Dowex-50 in the United States, Lewatit-100 in West Germany, and DiaonSK-1 in Japan) in 0.5mol of the same volume as the resin Soak in / L hydrochloric acid solution for 5 hours, drain the acid solution and rinse with water until neutral;

[0024] 2) Pre-configure chromium chloride containing 0.05% chromium by weight of the cation exchange resin into a 0.1 mol / L aqueous solution, slowly add it to the resin in step 1) under stirring, detect and adjust the pH value of the reaction solution to 4.0 , react at room temperature for 4 hours;

[0025] 3) In the detection step 2) the pH value of the reaction solution is adjusted with an aqueous sodium hydroxide solution with a concentration of 0.5moL / L, so that the pH value of the reaction solution is 6.0; washed twice with water, filtered and dehydrated;

[0026] 4) drying and pulverizing the f...

Embodiment 2

[0028] 1) Put the commercially available 001×12 / 14 / 16 strongly acidic styrene-based cation exchange resin (this product is equivalent to the US: Amberlite IR-132, IR-130, IR-124) in 2 mol of twice the volume of the resin Soak in / L hydrochloric acid solution for 2 hours, drain the acid solution and rinse with water until neutral;

[0029] 2) chromium nitrate with a chromium content of 0.5% by weight of the cation exchange resin is pre-configured into an aqueous solution of 1.0 mol / L, slowly added to the resin in step 1) under stirring, and the pH value of the reaction solution is detected and adjusted to 5.5, Reaction at room temperature for 7 hours;

[0030] 3) The pH value of the detection step 2) the reaction solution is adjusted with an aqueous potassium hydroxide solution with a concentration of 5moL / L, so that the pH value of the reaction solution is 7.0; washed 5 times, and centrifuged for dehydration;

[0031] 4) drying and pulverizing the filter cake obtained in step...

Embodiment 3

[0033] 1) Soak commercially available D001 macroporous strongly acidic styrene-based cation conversion resin (equivalent to American: Amberlite 200, West Germany: Lewaitet-SP 120) in a 1mol / L hydrochloric acid solution 1.5 times the volume of the resin for 3 hours , drain the acid solution and rinse with water until neutral;

[0034] 2) chromium acetate with a chromium content of 0.1% by weight of the cation exchange resin is pre-configured into a 0.5 mol / L aqueous solution, slowly added to the resin in step 1) under stirring, and the pH value of the reaction solution is detected and adjusted to 5.0, React at room temperature for 6 hours;

[0035] 3) In the detection step 2) the pH value of the reaction solution is adjusted with a sodium carbonate aqueous solution with a concentration of 1moL / L, so that the pH value of the reaction solution is 6.5; washed 3 times with water, filtered and dehydrated;

[0036] 4) drying and pulverizing the filter cake obtained in step 3) at a tem...

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Abstract

A Cr-type forage additive is a cationic exchange resin containing active Cr. It is prepared through adsorption and ion exchange between 3-valence cationic exchange resin, filtering, drying and pulverizing. It can be added to forage proportionally (0.1-1.0 mg / kg).

Description

technical field [0001] The invention relates to a trace element chromium feed additive and a preparation and use method. 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] Ion exchange resin (Ion exchange resin, IER) is a kind of polymer compound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/16A23K20/10A23K20/22
Inventor 夏枚生靳明建胡彩虹张红梅熊莉朱兴一
Owner ZHEJIANG UNIV
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