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Rare-earth forage additive preparation method and use thereof

A feed additive and rare earth technology, applied in the direction of animal feed, animal feed, application, etc., can solve the problems of not showing the advantages of promoting growth, difficult to determine the appropriate amount of addition, and the composition is very different, so as to improve the quality of animal products, The effect of improving feed utilization efficiency and low cost

Inactive Publication Date: 2009-08-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current feeding experiments use industrial or agricultural rare earth products, and there are few special ones for animal husbandry. The composition of various additives varies greatly, so it is difficult to determine the appropriate addition amount in production.
The effect of rare earth elements on the growth performance of livestock and poultry shows the characteristics of the fastest growing stage and the best effect, and its dosage is strictly required. Each kind of livestock and poultry has an optimal feeding dosage, which is lower or higher than the optimal dosage, not only Does not show growth-promoting benefits and may have adverse effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Put the commercially available 001×7 strong acidic styrene-based cation exchange resin (this product is equivalent to the United States: AmberrliteIR-120 Dowex-50, West Germany: Lewatit-100, Japan: DiaonSK-1), and place it with the resin, etc. Soak in a volume of 0.5mol / L hydrochloric acid solution for 6 hours, drain the acid solution and rinse with water until neutral;

[0026] 2) Pre-configure lanthanum chloride containing 0.5% 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 3.5 , react at room temperature for 5 hours;

[0027] 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 10moL / L, so that the pH value of the reaction solution is 7.0; washed 3 times with water, filtered and dehydrated;

[0028] 4) drying and pulverizing the filter ...

Embodiment 2

[0030] 1) Take the commercially available D001 macroporous strongly acidic styrene-based cation conversion resin (this product is equivalent to the US:

[0031] Amberlite200, West Germany: Lewaitet-SP120), soak in 5mol / L hydrochloric acid solution with 4 times the resin volume for 3 hours, drain the acid solution and rinse with water until neutral;

[0032]2) terbium nitrate whose terbium content is 1% by weight of the cation exchange resin and yttrium chloride whose yttrium content is 1% by weight of the cation exchange resin are pre-configured into a 2.0mol / L aqueous solution, and slowly added to the resin of step 1) under stirring , detect and adjust the pH value of the reaction solution to 6.5, and react at room temperature for 10 hours;

[0033] 3) In detection step 2) the pH value of the reaction solution is adjusted with an aqueous potassium hydroxide solution with a concentration of 0.5moL / L, so that the pH value of the reaction solution is 8.5; washed 6 times with wat...

Embodiment 3

[0036] 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 3mol of 1.5 times the volume of the resin Soak in / L hydrochloric acid solution for 3 hours, drain the acid solution and rinse with water until neutral;

[0037] 2) lanthanum chloride whose lanthanum content is 1% by weight of the cation exchange resin, cerium nitrate whose cerium content is 1% by weight of the cation exchange resin, aluminum chloride whose praseodymium content is 0.5% by weight of the cation exchange resin, and neodymium whose content is the cation exchange resin 0.5% by weight of neodymium nitrate, pre-configured into a 1.0mol / L aqueous solution, slowly added to the resin in step 1) under stirring, the pH value of the reaction solution was detected and adjusted to 5.0, and reacted at room temperature for 8 hours;

[0038] 3) The pH value of the detection step 2) is adjusted with ...

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PUM

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Abstract

A RE-type forage additive is a cationic exchange resin containing active RE. It is prepared through adsorption and ion exchange between RE salt cationic exchange resin, filtering, drying and pulverizing. It can be added to forage proportionally (50-500 mg / kg).

Description

technical field [0001] The invention relates to a rare earth feed additive and its preparation and use method. Background technique [0002] Rare earth elements include 15 elements in the lanthanide series (atomic numbers from 57 to 71) and 17 elements such as scandium and yttrium. According to some differences in their properties, they are divided into light rare earth elements (scandium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium) and heavy rare earth elements (gadolinium, terbium, dysprosium, holmium, erbium, yttrium, thulium, ytterbium, lutetium). Among them, cerium accounts for 48%, lanthanum accounts for 25%, neodymium accounts for 16%, samarium accounts for 2%, praseodymium accounts for 5%, and other 12 kinds of elements account for only 4%. my country is rich in rare earth resources, with industrial reserves of more than 36 million tons, accounting for about 80% of the world's total reserves. [0003] my country is also the first co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/16A23K20/20
Inventor 夏枚生靳明建胡彩虹姚志通张红梅朱兴一
Owner ZHEJIANG UNIV
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