CN102258123A - Method for preparing feed additive-amino acid microelement chelate complex - Google Patents
Method for preparing feed additive-amino acid microelement chelate complex Download PDFInfo
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Abstract
The invention discloses a method for preparing a feed additive-amino acid microelement chelate complex, which is a high-technology-content feed additive and contains amino acid and microelements which are easy for animals to absorb. A feed prepared from the chelate complex has good palatability and high absorptivity, is easy to transfer, can be used for increasing the activity of internal enzymes in animals, increasing the utilization ratios of proteins, fats and vitamins and improving the growing performance of animals, and is suitable for animals as well as fishes. The micro-element chelate complex is prepared from amino acids (methionine, lysine, L-tryptophan), inorganic salts (ferrous sulfate, copper sulfate, manganous sulfate and zinc sulfate), a sodium hydrate aqueous solution with the concentration 10 percent and absolute ethanol serving as raw materials.
Description
One, technical field
The invention belongs to field of fodder, be specifically related to a kind of method of utilizing amino acid suitability for industrialized production feed addictive-amino acid trace element chelated thing.
Two, background technology
Trace element is one of requisite nutrient in the growth of animal process.Initial trace element is that the form with inorganic salts is introduced directly into feed, as ferrous sulfate, copper sulphate, manganese sulfate, zinc sulfate, calcium iodate, sodium selenite etc.The trace mineral supplement that China's feedstuff industry generally uses at present remains the inorganic salts or the oxide of trace element, though inorganic salts is water-soluble fine, but in animal alimentary canal easily with feed in common phytate anion, oxalic acid anion form the very little salt of corresponding solubility through the biochemical reaction form in the animal body, difficult by intestinal absorption.Therefore, people bring into use second generation trace mineral supplement-acylate, as the ferrous salt of ferrous citrate, fumaric acid, tartaric acid, ascorbic acid, adipic acid etc., and zinc gluconate etc., but have weak points such as the biology utilization rate is low equally.Development along with the feed industry, third generation trace mineral supplement amino-acid trace element chelate is amino acid-ferrous, amino acid copper, manganese amino acid and amino-acid zinc etc. are developed gradually, its feature be stablize, efficiently, toxicity is little, in enteron aisle, be easy to digest and assimilate, help growth of animal, can prevent and treat trace element deficiency, improve the immunity of organisms of animal, and useful for utilizing of nutrition composition in the feed, also have the effect of amino acid hardening agent concurrently.So-called chelate is exactly the complex compound with certain structure type, be that ligand can be with two or more coordination atoms and same central ion complexing, amino acid trace element chelated thing forms coordinate bond with the nitrogen-atoms in divalent metal and the amino amino, it is generally acknowledged that amino acid is with the trophism trace element: it is 4 chelate that iron, copper, manganese, zinc etc. form ligancy usually.Its chela number of rings is 2, and promptly amino acid is 2: 1 with the mol ratio of trace element.。The formation of chela ring causes chelating ion to dissociate than non-chelate ion difficult fractionation in the aqueous solution.Amino acid trace element chelated thing because of its metal ion with after amino acid molecular combines by coordinate bond, make its intramolecular charge be tending towards neutral, formed more stable chemical constitution, not only good stability, good fluidity, antagonism are few, it is little to enter in the animal body in the digestion process of back influenced factor, is convenient to abundant absorption and the utilization of body to metal ion.Amino acid trace element chelated thing forms according to it whether amino acid is that monomer can be divided into two big classes.One class is the single amino acid microelement chelate, the i.e. chelate that forms by chelating by the trace element of the amino acid of single kind and single kind, zinc methionine chelate as methionine and the formation of zinc sulfate chelating, the lysine ferrous chelate compound that lysine and ferrous sulfate chelating form etc., this series products is formed fixing, good stability.The another kind of kilnitamin that is to use, they are by kilnitamin and a certain or several trace element chelated forming, and the composition of this series products is unfixing, poor stability, and the biology utilization rate is lower.Kind according to metal ion in the amino acid trace element chelated thing can be divided into it copper amino acid chelate, amino acid chelated iron etc.; It can be divided into methionine microelement chelate, lysine microelement chelate etc. again according to amino acid whose kind in the amino acid trace element chelated thing.Inorganic salts commonly used, organic salt are after being taken in by animal, must be by means of the effect of coenzyme, behind amino acid and other materials formation chelate, could be absorbed by body, absorb the back trace element and in blood, just can be transported to the body desired area and effect takes place with some combined with protein.And amino-acid chelate, natural form when its structure approaches animal body absorption trace element, it is again the intermediate material of synthetic proteins process in the animal body, and the stability constant of amino acid trace element chelated thing is moderate, and the trace element cation discharges again effectively for the body utilization when needing.So, give animal directly supplies with amino acid trace element chelated thing not only infiltration rate than the fast 2-3 of inorganic salts doubly and can save many biochemical processes, saving physical consumption, raising efficiency of feed utilization.Animal is when taking in, taken in simultaneously animal essential and the two kinds of nutriment amino acid and the trace element that often lack in the feed, thereby has a double nutrition effect, in addition, amino acid trace element chelated thing strengthens the effect of antibacterial ability, raising and promotion zooblast and humoral immunity in addition, some enteritis, dermatitis, dysentery and anaemia there are therapeutic action, can strengthen the activity of body endoenzyme simultaneously, improve the utilization rate of protein, fat and vitamin.General inorganic salts such as direct adding feed influence the palatability of animal because of peculiar taste is arranged, simultaneously again because of its character instability, easy and other nutriments produce antagonisms, also can influence GI acid-base balance in digesting and assimilating process, thereby body is had a negative impact; And amino acid trace element chelated thing good palatability, the absorptivity height is easily transported, and can strengthen the activity of animal body endoenzyme, improves the utilization rate of protein, fat and vitamin, thereby improves the growth performance of animal.Discover that amino acid chelated iron can pass to piglet by sow placenta or breast milk, the iron that increases young pig is stocked, thereby promotes piglet growth, and the prevention anaemia reduces the death rate.Also help lend some impetus to growing-finishing pigs and grow, can obviously improve daily gain, reduce feedstuff-meat ratio, improve meat.Concerning fryer, use the production performance that amino acid trace element chelated thing can improve chicken, increase immunity, improve food conversion ratio; Be applied to laying hen, then can improve eggshell quality and egg laying performance.Be used for ruminant and can improve production performance, carcase quality and immunocompetence, reduce the body cell quantity in the milk.Be applied to fish, can make the speed of growth of fish improve 30-60%, (different fingerlings is slightly different) can also make flesh of fish matter obviously improve, and build obviously improves.The present invention mainly provide a kind of by single kind amino acid and the production method of the amino acid trace element chelated thing that forms by chelating of the trace element of single kind.
The preparation method of a kind of feed addictive-amino acid trace element chelated thing, its beneficial effect is: feed prepared good palatability, absorptivity height, easily transhipment, can strengthen the activity of animal body endoenzyme, improve the utilization rate of protein, fat and vitamin, thereby improve the growth performance of animal.
Three, summary of the invention
The problem that the present invention mainly solves provides a kind of method with single amino acid and the amino acid trace element chelated thing of single micro-suitability for industrialized production.The raw material of producing amino acid trace element chelated thing use has: amino acid (methionine, lysine, L-tryptophan), inorganic salts (ferrous sulfate, copper sulphate, manganese sulfate, zinc sulfate), 10% sodium hydrate aqueous solution, absolute ethyl alcohol.
The present invention can be achieved through the following technical solutions:
A kind of method of utilizing the amino acid trace element chelated thing of amino acid suitability for industrialized production is characterized in that being made of following steps:
(1) preparation amino acid and 2.5 times of aqueous solution of inorganic salts, (is the mole proportioning of amino acid and inorganic salts 1: 1,2: 1,3: 1, carry out chelating test at 4: 1, result of the test shows, when the mole proportioning at 2-2.5: in the time of 1, inorganic ion can than more completely with chelating amino acids, chelation percent is more than 96%, determines that therefore the mole proportioning of chelating is 2.2: 1; To the temperature of amino acid and metal ion-chelant proportioning with 2.2: 1, under 10 ℃, 30 ℃, 60 ℃, 100 ℃ temperature, carry out chelating, result of the test shows that temperature is little to the influence of chelatropic reaction, at room temperature chelating preferably just.For the pH value, between 5-9, carry out chelating test, result of the test shows that pH value is best 7.2 o'clock effects, the reaction time then be 0.5-1 hour be the best).
(2) amino acid solution for preparing is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, the ratio that in the mole proportioning is 2.2: 1 is also sent inorganic salt solution into reactor, at any time monitor the pH value, with 10% sodium hydrate aqueous solution adjust pH it is remained at about 7.2,0.5 hour reaction time.
(3) reactant being sent into centrifugal separator separates, removing the solid that obtains behind the moisture is the inorganic salts of amino-acid chelate and a spot of not chelating, get ratio in 1: 1 this moment and add absolute ethyl alcohol, utilize amino-acid chelate to be insoluble to absolute ethyl alcohol, and inorganic salts are dissolved in the principle of absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use the remaining amino-acid chelate that is after stirring, amino-acid chelate is sent into drying machine sealing oven dry, will dry then and be packaged to be finished product after thing is pulverized.
Amino acid described in the above-mentioned steps (1) comprises methionine, lysine, L-tryptophan; Inorganic salts comprise ferrous sulfate, copper sulphate, manganese sulfate, zinc sulfate.
The baking temperature of drying machine is 150 ℃-180 ℃ in the above-mentioned steps (3).
The present invention compared with prior art has the following advantages:
(1) the amino acid trace element chelated thing of suitability for industrialized production, technology is simple, and manufacturing cost is low, need not to increase visual plant, and is easy to operate, is easy to promote;
(2) good product quality, the feed prepared good palatability, the absorptivity height is easily transported, and can strengthen the activity of animal body endoenzyme, improves the utilization rate of protein, fat and vitamin, thereby improves the growth performance of animal, both has been applicable to animal, also is applicable to fish.
Four, the specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment one
Methionine and ferrous sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the methionine aqueous solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2: 1 ratio adds ferrous sulfate aqueous solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining ferrous methionine is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment two
Methionine and copper sulphate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the methionine aqueous solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2.1: 1 ratio adds copper sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining copper methionine is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment three
Methionine and manganese sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the methionine aqueous solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2.2: 1 ratio adds manganese sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining manganese methionine is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment four
Methionine and zinc sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the methionine aqueous solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2: 1 ratio adds zinc sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining zinc methionine is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment five
; Lysine and ferrous sulfate respectively add 2.5 times of dilutions of water and are mixed with the aqueous solution, lysine solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2.1: 1 ratio adds ferrous sulfate aqueous solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and the ferrous drying machine of sending into of remaining lysine seals oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment six
Lysine and copper sulphate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, lysine solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2.1: 1 ratio adds copper sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining Copper lysinate is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment seven
Lysine and manganese sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, lysine solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2.1: 1 ratio adds manganese sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining lysine manganese is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment eight
Lysine and zinc sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, lysine solution is sent into chemical reaction kettle, and the temperature remains within the normal range, starts agitator, in the mole proportioning is that 2.1: 1 ratio adds zinc sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining lysine-zn is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment nine
L-tryptophan and ferrous sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the L-tryptophan aqueous solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2: 1 ratio adds ferrous sulfate aqueous solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and the ferrous drying machine of sending into of remaining L-tryptophan seals oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment ten
L-tryptophan and copper sulphate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the L-tryptophan aqueous solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2: 1 ratio adds copper sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining L-tryptophan copper is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment 11
L-tryptophan and manganese sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the L-tryptophan aqueous solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2: 1 ratio adds manganese sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining L-tryptophan manganese is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Embodiment 12
L-tryptophan and zinc sulfate are respectively added 2.5 times of dilutions of water be mixed with the aqueous solution, the L-tryptophan aqueous solution is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, in the mole proportioning is that 2: 1 ratio adds zinc sulfate solution, with the sodium hydrate aqueous solution adjust pH it is remained at about 7.2.Reacted 0.5 hour.Reactant is sent into centrifugal separator separate, remove moisture.Solid after the separation got ratio in 1: 1 and adds absolute ethyl alcohol, and the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, and remaining L-tryptophan zinc is sent into drying machine sealing oven dry, will dry the thing crushing packing then and obtain finished product.
Claims (4)
1. the preparation method of feed addictive-amino acid trace element chelated thing, it is characterized in that: with amino acid (methionine, lysine, L-tryptophan), inorganic salts (ferrous sulfate, copper sulphate, manganese sulfate, zinc sulfate), 10% sodium hydrate aqueous solution, absolute ethyl alcohol is raw material, obtains finished product by following steps.
2. the preparation method of a kind of feed addictive according to claim 1-amino acid trace element chelated thing, the feature of its first step is: prepare 2.5 times of aqueous solution of amino acid and inorganic salts respectively, amino acid and inorganic salts mole proportioning are 2.2: 1.
3. the preparation method of a kind of feed addictive according to claim 1-amino acid trace element chelated thing, the feature in its second step is: the amino acid solution for preparing is sent into chemical reaction kettle, the temperature remains within the normal range, start agitator, the ratio that in the mole proportioning is 2.2: 1 is also sent inorganic salt solution into reactor, at any time monitor the pH value, it is remained at about 7.2,0.5 hour reaction time with 10% sodium hydrate aqueous solution adjust pH.
4. the preparation method of a kind of feed addictive according to claim 1-amino acid trace element chelated thing, the feature in its 3rd step is: reactant is sent into centrifugal separator separate, removing the solid that obtains behind the moisture is the inorganic salts of amino-acid chelate and a spot of not chelating, get ratio in 1: 1 this moment and add absolute ethyl alcohol, the elimination absolute ethyl alcohol reclaims and waits to re-use after stirring, the remaining amino-acid chelate that is, amino-acid chelate is sent into drying machine sealing oven dry, will dry then and be packaged to be finished product after thing is pulverized.
Amino acid described in the above-mentioned steps 2 comprises methionine, lysine, L-tryptophan; Inorganic salts comprise ferrous sulfate, copper sulphate, manganese sulfate, zinc sulfate.
The baking temperature of drying machine is 150 ℃-180 ℃ in the above-mentioned steps 4.
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| CN102626180A (en) * | 2012-04-10 | 2012-08-08 | 南宁市泽威尔饲料有限责任公司 | Amino acid chelating compound organic feed additive and production method thereof |
| CN102796792A (en) * | 2012-08-30 | 2012-11-28 | 广元市海鹏生物科技有限公司 | Preparation method for chitterlings membrane protein peptide zinc chelate preparation |
| CN102952060A (en) * | 2012-12-04 | 2013-03-06 | 山东省化工研究院 | Preparation method of feed additive tryptophane copper complex |
| CN102964288A (en) * | 2012-12-04 | 2013-03-13 | 山东省化工研究院 | Preparation method of feed additive tryptophan ferrous complex |
| CN102977002A (en) * | 2012-12-04 | 2013-03-20 | 山东省化工研究院 | Preparation method of tryptophan and zinc complex as feed additive |
| CN103030584A (en) * | 2012-12-04 | 2013-04-10 | 山东省化工研究院 | Method for preparing feed additive tryptophan chromium complex |
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| CN105004774A (en) * | 2015-07-10 | 2015-10-28 | 仲恺农业工程学院 | Preparation method of modified electrode and application of modified electrode in determination of free copper ions in feed additive copper lysine |
| CN105285392A (en) * | 2015-10-26 | 2016-02-03 | 滁州市南谯区施集镇兴牧生态养殖场 | Special feed containing Chinese herbal medicine for sows in the lactation period |
| CN105876165A (en) * | 2016-04-15 | 2016-08-24 | 中国农业科学院北京畜牧兽医研究所 | Preparation method and application of zinc lysine feed additive with moderate chelation strength |
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| CN102626180A (en) * | 2012-04-10 | 2012-08-08 | 南宁市泽威尔饲料有限责任公司 | Amino acid chelating compound organic feed additive and production method thereof |
| CN102626180B (en) * | 2012-04-10 | 2014-11-12 | 南宁市泽威尔饲料有限责任公司 | Amino acid chelating compound organic feed additive and production method thereof |
| CN102796792A (en) * | 2012-08-30 | 2012-11-28 | 广元市海鹏生物科技有限公司 | Preparation method for chitterlings membrane protein peptide zinc chelate preparation |
| CN102964288A (en) * | 2012-12-04 | 2013-03-13 | 山东省化工研究院 | Preparation method of feed additive tryptophan ferrous complex |
| CN102977002A (en) * | 2012-12-04 | 2013-03-20 | 山东省化工研究院 | Preparation method of tryptophan and zinc complex as feed additive |
| CN103030584A (en) * | 2012-12-04 | 2013-04-10 | 山东省化工研究院 | Method for preparing feed additive tryptophan chromium complex |
| CN102952060A (en) * | 2012-12-04 | 2013-03-06 | 山东省化工研究院 | Preparation method of feed additive tryptophane copper complex |
| CN104413272A (en) * | 2013-08-21 | 2015-03-18 | 南通海辰蛋白科技有限公司 | Medical fish soaking liquid |
| CN105004774A (en) * | 2015-07-10 | 2015-10-28 | 仲恺农业工程学院 | Preparation method of modified electrode and application of modified electrode in determination of free copper ions in feed additive copper lysine |
| CN105004774B (en) * | 2015-07-10 | 2017-10-13 | 仲恺农业工程学院 | Preparation method of modified electrode and application of modified electrode in determination of free copper ions in feed additive copper lysine |
| CN105285392A (en) * | 2015-10-26 | 2016-02-03 | 滁州市南谯区施集镇兴牧生态养殖场 | Special feed containing Chinese herbal medicine for sows in the lactation period |
| CN105876165A (en) * | 2016-04-15 | 2016-08-24 | 中国农业科学院北京畜牧兽医研究所 | Preparation method and application of zinc lysine feed additive with moderate chelation strength |
| CN106804893A (en) * | 2016-06-14 | 2017-06-09 | 张品林 | A kind of functional form pig feed additive and preparation method thereof |
| CN107712315A (en) * | 2017-11-13 | 2018-02-23 | 南昌傲农生物科技有限公司 | A kind of feed addictive of the acid complex containing compounded amino and preparation method and application |
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Application publication date: 20111130 |