CN101356955B

CN101356955B - Feed additive for feeding boar without boar taint and boar meat using the same

Info

Publication number: CN101356955B
Application number: CN2007101358663A
Authority: CN
Inventors: 李淙铉
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-30
Filing date: 2007-07-30
Publication date: 2011-12-07
Anticipated expiration: 2027-07-30
Also published as: CN101356955A

Abstract

The present invention relates to a feed additive for raising a boar without boar odor and port produced with the feed additive, in particular to the feed additive for producing a boar without boar odor. The feed additive is prepared by adding 20 to 30 portions by weight of cation solution into 100 portions by weight of another solution; wherein, the cation solution comprises 0.001 weight percent to 10 weight percent of one or a plurality metal cations selected from the groups formed by Fe<2+>, Mg<2+>, Mn<2+>, Ca<2+>, Co<2+>, K<+>, Cu<2+>, Zn<2+>, Mo<2+> and Na<+>; the another solution is prepared by mixing equivalent brown seaweed, bladder wrack, gulfweed and crab shell, adding HCl into the obtained mixture for acid hydrolysis, slaking for at least one month after being neutralized to pH 7.0 with 5N NaOH, and then being filtered. The feeding of the feed additive to the boar can achieve the effects of dispelling the boar odor, enhancing the immunity of the boar, reducing the death rate, increasing the internal organs and the weight, and improving the throughput rate of pork, and the feeding amount of feed can thus be decreased..

Description

Be used to raise no boar smell of mutton boar feed addictive and use the pork of its production

Technical field

The present invention relates to a kind ofly be used to raise the feed addictive of the boar of having removed the boar smell of mutton and by feeding the pork that it is produced, more specifically, relate to by cationic solution and join the feed addictive for preparing in the another kind of solution of 100 weight portions the 20-30 weight portion, and relate to by the pork of boar smell of mutton that used its removal that obtains, wherein said cationic solution comprises that quantity is that one or more of 0.001-10 weight % are selected from by Fe ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming, described another kind of solution is brown seaweed, bladder-wrack (or sea-tangle), sargassum and the crab shell by equivalent volumes, by adding HCl, and with among the NaOH and post curing at least one month, filter then and prepare with this mixture of acid hydrolysis.

Background technology

Known every 100g brown seaweed comprises 960mg calcium and comprises several mineral materials, and especially every 100g brown seaweed comprises 25mg iodine.The amount of the iodine that comprises in the person is about 25mg, and it is used as the raw material of thyroid hormone.The thyroid hormone stimulating growth also quickens metabolism.Because iodine deficiency, growth and metabolism are weakened.Because brown seaweed also comprises water-soluble edible fibers, so it can excrete toxin.

Bladder-wrack (or sea-tangle) is rich in the mineral matter of the essential micronutrient of 50 kinds of conducts such as calcium, sodium, magnesium etc.Especially, iodine is rich in most in bladder-wrack, and iodine is a kind of micronutrient of easy shortage and is the main component of thyroid hormone in various mineral matters.

Sargassum is the marine alga that belongs to brown algae, and known have 18 kinds of spontaneous growths in Korea S.Sargassum fulvellum (Sargassum fulvellum) and Sargassum horneri (Sargassum horneri) are used to food, other the raw material that is used as fertilizer or sea grass ashes (kelp meal).Sargassum is made up of 3.1% protein, 0.2% fat, 5.1% glucose, 28.4% ash content and a large amount of inorganic matter and vitamin, is a kind of natural health care that receives much concern.

Discarded crab shell comprises the chitin of high-quality in the production process of seafood.The chitin that obtains from the crab shell is used as the raw material of shitosan or chitosan oligosaccharide.But the shitosan active cell is to suppress aging, booster immunization and prevent disease.In addition, it has the function that activates body self-healing ability and control biological rhythm.Known chitosan oligosaccharide can strengthen immunity, improve cholesterol, and has antimicrobial acivity.

The boar smell of mutton is meant the overpowering odor that boar discharges.Usually, the boar smell of mutton is under the fresh state and can not feels at meat, but will produce when meat is heated, and it is a kind of carrion smell that is similar to sweat or urinary odor, inedibility, so the boar smell of mutton is the critical defect of pork.For this reason, in the country of most of families animal industry prosperity, boar nearly all except that special circumstances is all castrated.Usually, for emasculated pig, knownly can not produce the boar smell of mutton, but it is reported recently, more than 5% can be produced the boar smell of mutton by the castrating pig.Therefore, the consumer has avoided buying and has shown the pork that above-mentioned boar smell of mutton is had sensitivity response, and the loss of livestock culturing field becomes very serious.

But it is domestic in (Korea S), still have many feed lots of not implementing castrating, this is to compare the reason that is descended by the productivity ratio of castrating pig with boar, and compare with boar, castrated the utilization rate that degree that the growth rate of pig descends is about 10%, fat content increases 9-10% and feed and reduce about 10%.In addition, owing in most of boars, do not produce boar smell of mutton (but only about wherein 65%), so about just being carried out in countries that some implement castrating to boar by the research of castrating pig.

The known reason of the boar smell of mutton of hitherto reported is owing to scatol and androsterone in the fat that is accumulated in meat.Androsterone is the sex hormone that produces in the boar testis, and its form with over oxidation accumulates in the adipose tissue.Simultaneously, the known amount that accumulates in the androsterone in the fat changes with other the steroid relevant with the boar smell of mutton with a part to a great extent, but other (steroid) do not exert an influence to the boar smell of mutton except androsterone.The another that produces the boar smell of mutton because of scatol be spontaneous in enteron aisle in the protein digestibility process, and known be in the process of tryptophan (in the amino acid a kind of) degraded, to produce.Like this, the material of generation is absorbed in enteron aisle and accumulates in lean meat and the fat, especially in back fat (back fat).With regard to public health, such material does not injure human body and all produces in castrating pig, boar and sow body, but it gathers in the fat that only occurs over just boar.

Therefore, owing to castrating under the situation of pig in order to remove the boar smell of mutton, not only productivity ratio but also remove the boar smell of mutton fully and all can not ideally realize is very important even therefore explore the scheme that can produce the boar of removing the boar smell of mutton under the situation of not castrating boar.

Summary of the invention

Therefore, the present inventor has finished the present invention, has wherein confirmed the following fact: the boar of using feed addictive of the present invention to raise can be produced the pork of removing the boar smell of mutton under the situation that does not have castrating.

The purpose of this invention is to provide the feed addictive that is used to raise the boar of having removed the boar smell of mutton, and provide the pork of boar smell of mutton that used removal that this feed addictive produces, this feed addictive is to join in the another kind of solution of 100 weight portions by the cationic solution with the 20-30 weight portion to prepare, and wherein to comprise quantity be that one or more of 0.001-10 weight % are selected from by Fe to this cationic solution ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming, described another kind of solution are behind brown seaweed, bladder-wrack, sargassum and the crab shell by equivalent volumes, to add HCl with this mixture of acid hydrolysis, and with among the NaOH and post curing at least one month, filter then to prepare.

Description of drawings

Fig. 1 shows the curve map of the emissivity of feed addictive of the present invention;

Fig. 2 shows the curve map of the emission energy of feed addictive of the present invention;

Fig. 3 shows the stomach size of (a) common boar and intestines length and (b) photo of and intestines length big or small by the stomach of supplying with the boar that feed addictive of the present invention raises.

Fig. 4 shows the photo of stomach mouth size with the stomach mouth size of the boar that (b) passes through supply feed addictive raising of the present invention of (a) common boar.

The specific embodiment

To achieve these goals, the invention provides the feed addictive that is used to raise the boar of removing the boar smell of mutton, this feed addictive is to join in the another kind of solution of 100 weight portions by the cationic solution with the 20-30 weight portion to prepare, and it is that one or more of % of 0.001-10 weight are selected from by Fe that this cationic solution comprises quantity ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming, this another kind solution are behind brown seaweed, bladder-wrack, sargassum and the crab shell by equivalent volumes, to add HCl with this mixture of acid hydrolysis, and with among the NaOH and post curing at least one month, filter preparation then.

The present invention also provides by supplying with this feed addictive and has raised the pork that does not have the boar smell of mutton that boar produces.

In the present invention, preferably, metal cation comprises that one or more are selected from by Fe ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming more preferably, is included in Fe in the above metal cation ²⁺, Mg ²⁺, Mn ²⁺And Ca ²⁺Whole (metal cations), and most preferably, comprise the Fe of identical weight ratio ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺

With respect to the total amount of fodder compound, the amount that this feed addictive that is used for boar production preferably adds is 0.005-0.05 weight %, and more preferably the amount of Tian Jiaing is 0.01 weight %.

In addition, the invention provides by supplying with the pork that this feed addictive is produced with the content that has increased DHA component, gamma-linoleic acid and unrighted acid.

Below the present invention will be described in more detail.

The invention provides the feed addictive that is used to raise the boar of removing the boar smell of mutton, this feed addictive is to join in the another kind of solution of 100 weight portions by the cationic solution with the 20-30 weight portion to prepare, and it is that one or more of 0.001-10 weight % are selected from by Fe that wherein said cationic solution comprises quantity ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming, described another kind of solution is brown seaweed, bladder-wrack, sargassum and the crab shell by equivalent volumes, adds HCl with this mixture of acid hydrolysis, and with among the NaOH and post curing at least one month, filters preparation then.

In above-mentioned, if the content of metal cation is lower than 0.001 weight %, effect then of the present invention just can not realize, if this content greater than 10% weight, then effect is just outstanding.

In addition, if the addition of cationic water (solution) is lower than 20 weight portions, effect then of the present invention just can not realize that if should measure greater than 30 weight portions, then effect is just outstanding.

In above-mentioned, calcium is a kind of formation that component and magnesium also are used to bone that makes up, remaining be used in the enzyme and be contained in adenosine diphosphate (ADP) and atriphos in.Iron has the function (feint function) of weak combination or separated oxygen, wherein 60 weight % form the hemoglobin in the animal body, 16 weight % exist with cytohemin (cytohamemin) form of cell, about 9 weight % exist with myoglobins (chromoplast of muscle) form, and remaining is present in each internal organ and the marrow as ferritin.Manganese mainly is contained in the bone and liver and kidney and digestive ferment liquid of animal, and known its produces ovum and sperm and the function aspects that strengthens ovulation and embryonated egg is played important effect in ovary and testis.As for copper, combined with protein in itself and the animal body and being stored, and to combine with oxidation be that essential cytochromes are as activating enzymes with alpha globulin in the serum for cellular respiration, and copper is a kind of essential minerals with the formation component of the phenol oxidase that contains cytochrome oxidase and phenolic phenol form, and deposits in animal body as the copper absorber when it exists with ionic condition.Cobalt is a kind of seldom known mineral matter, yet, have been found that recently cobalt participates in synthetic immune antiboidy (being better than Cobalamin (cobalamin)), so that antibiotic in incretory.Molybdenum is a kind of essential trace element in the plant, its a kind of enzyme that conduct matches with the nitrogen fixation of bacterium in legume.Molybdenum trioxide and Na ₂MoO ₄It is micronutrient.Sodium and chlorine or carbonate reaction with keep body fluid and the tissue in anion and the balance between the cation.Sodium ion is most important in the included ion of extracellular fluid, and has the function that keeps moisture in tissue.Under the too small situation of sodium intake, acid-base balance (it is the key factor that keeps the moisture in tissue and the nutritional condition) is destroyed.

Feed addictive of the present invention can join by the cationic solution with the 20-30 weight portion in the another kind of solution of 100 weight portions and be prepared, and it is that one or more of 0.001-10 weight % are selected from by Fe that wherein said cationic solution comprises quantity ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming, described another kind of solution is brown seaweed, bladder-wrack, sargassum and the crab shell by equivalent volumes, add the mixture that HCl obtains with acid hydrolysis, and in the pH6.5-7.0 post curing at least 1 month that neutralizes of the NaOH with 5N, preferably at 30-40 ℃ of slaking 1-3 month, filtration prepared then.

Above-mentioned solion can prepare by known method according to the form with selected metal and the corresponding to salt of metal cation.Be described as in more detail, at first metal can be dissolved in the strong acid solution such as HCl, and by cation-exchange membrane to generate cationic water (solution).Water-soluble salt can with the macroion tendency be dissolved in the water and by cation-exchange membrane to form cationic water (solution).Water insoluble but be soluble in that salt such as the strong acid of HCl can be dissolved in acidic aqueous solution and by cation-exchange membrane to form cationic water (solution).In addition, metal or salt water insoluble or acidic aqueous solution can be broken down into anion and cation by electrolysis in water, then by cation-exchange membrane to form cationic water.

In the preparation of feed addictive, preferably include all Fe in the metal cation ²⁺, Mg ²⁺, Mn ²⁺And Ca ²⁺, and more preferably comprise the Fe of identical weight ratio ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺

Feed addictive by method for preparing can be supplied with boar with the amount of 0.005-0.05 weight % with respect to the total amount of this fodder compound, more preferably, supplies with boar with the amount of 0.01 weight %.In addition, the invention provides the pork of producing by the boar of raising with feed addictive of the present invention.

Below, will explain the present invention in more detail by embodiment and experimental example.Yet such embodiment only is in order to demonstrate the invention, is not limited to the present invention.

Embodiment 1: the preparation of feed addictive

Each 10kg mixes with brown seaweed, bladder-wrack, sargassum and crab shell, and mixture carried out acid hydrolysis with the 5N HCl of 20kg, be neutralized to pH 7.0 with 5N NaOH then, and, filter (with the filter of Milipore Co.) then to remove solid 35 ℃ of following slakings 1 month.

With Fe, Mg, Mn, Cu, Zn and Mo all be dissolved in 5N HCl and by cation-exchange membrane with the preparation Fe ²⁺, Mg ²⁺, Mn ²⁺, Cu ²⁺, Zn ²⁺And Mo ²⁺Cationic water (solution).

With CaCO ₃Be dissolved in 5N HCl and by cation-exchange membrane with the preparation Ca ²⁺Cationic water (solution).

With Co (NO ₃) ₂, KCl and NaCl is water-soluble and by cation-exchange membrane with the preparation Co ²⁺, K ⁺And Na ⁺Cationic water (solution).

The Fe that comprises 0.1 weight % with 25 weight portions ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Cationic water (its arrange but with identical amount preparation) with order of cationic ion bond radius join in the another kind of solution that the mixture by brown seaweed, bladder-wrack, sargassum and crab shell of 100 weight portions obtains, thereby prepare feed addictive of the present invention.

Experimental example 1: radiation experiments

The feed addictive of the present invention that obtains in embodiment 1 need carry out radiation experiments at the far infrared applicating evaluating center of KICM (Korea S construction material research institute, Korea Institute of Construction Materials).

In the radiation experiments result at Korea S construction material research institute (far infrared applicating evaluating center), can confirm the result in the following table 1.Following result obtains down at 40 ℃, and it is the measurement result of dividing spectrometer with FT-IR of comparing with black matrix (BLACK BODY).In addition, Fig. 1 and Fig. 2 show the emissivity of feed addictive of the present invention and the curve map of emission energy.

Table 1: the result of the radiation experiments of feed addictive

Emissivity (5-20 μ l)	Emission energy (W/m μ l, 40 ℃)
		0.91	3.6×10 ²

Experimental example 2: feed addictive of the present invention is to the influence of BA

For the total feed of each part, after adding 10,100,250 and 500 times of dilutions of the feed addictive in the above preferred embodiment 1 of 0.1 weight %, to be divided into 1 control group and 4 experimental group with the 8 week male white mouse in age (CB57BL) of the 200-250g of its raising, four experimental group were raised 3 months with the feed of the feed addictive (its diluted 10,100,250 and 500 times respectively) of the embodiment 1 that comprises 0.1 weight % respectively.Observation is to the influence of the weight change of size (size) variation of the variation of leucocyte, pancreas immunocyte and Ig-M, pancreatic cell tissue and internal organ or health.In control group, supply with the feed that does not contain feed addictive of the present invention.

As a result of, to shown in the table 5, leucocyte varied number, lymphocyte and neutrophil leucocyte change maximum (referring to table 2) in the group of adding 10 times of dilutions of the present invention as table 2.In addition, pancreas immunocyte and Ig-M change maximum (referring to table 3) in the group of adding 10 times of dilutions of the present invention, the size of pancreatic cell tissue also changes maximum (referring to table 4) in the group of adding 10 times of dilutions of the present invention, and the weight change of internal organ or health shows similar result's (referring to table 5).Therefore, this feed addictive shows the most significant effect under the situation of 10 times of dilutions, wherein can confirm by supplying with feed addictive of the present invention, the quantity of leucocyte and pancreas immunocyte increases and the immunity of domestic animal strengthens, the death rate reduces thus, and the histocyte in the internal organ increases, and the weight of internal organ or body increases thus, makes the productivity ratio of pork maximize.

Table 2: to leukocytic influence

	WBC(1X10 ³mm ³) the leucocyte varied number	The lymphocytic rate of change of lymphocyte (%)	The rate of change of neutrophil leucocyte (%) neutrophil leucocyte
				Control group	6.1±3.2	69.1±2.9	29.4±3.0
10 times of dilution interpolation groups of the present invention	7.0±0.7	106.1±5.0	54.4±3.4
				100 times of dilution interpolation groups of the present invention	6.6±0.7	98.4±2.7	44.7±3.1
250 times of dilution interpolation groups of the present invention	6.4±2.0	92.5±3.4	39.5±2.5
				500 times of dilution interpolation groups of the present invention	6.1±0.5	87.2±4.8	35.5±3.8

Table 3: to the influence of pancreas immunocyte and Ig-M

	The varied number of Ig-MPFC (106 * pancreatic cell) immunocyte	The variable quantity of Ig-M (mg/dl tires) immunocyte
			Control group	3200±150	27.8±0.5
10 times of dilution interpolation groups of the present invention	3890±240	53.7±0.4
			100 times of dilution interpolation groups of the present invention	3780±140	47.9±0.6
250 times of dilution interpolation groups of the present invention	3690±130	42.5±1.1
			500 times of dilution interpolation groups of the present invention	3540±200	38.3±0.2

Table 4: to the influence of pancreatic cell tissue size

	The cell tissue size of pancreas (with the fiducial value % of control group)
		Control group	100 (base values)
10 times of dilution interpolation groups of the present invention	141×3.2
		100 times of dilution interpolation groups of the present invention	135×4.5
250 times of dilution interpolation groups of the present invention	122×0.8
		500 times of dilution interpolation groups of the present invention	109×2.7

Table 5: to the influence of the weight change of internal organ and health

	The ratio of thymic weight and body weight (%)
			Control group	0.10±0.02	0.36±0.01
10 times of dilution interpolation groups of the present invention	0.21±0.03	0.59±0.01
			100 times of dilution interpolation groups of the present invention	0.18±0.02	0.55±0.03
250 times of dilution interpolation groups of the present invention	0.17±0.01	0.47±0.01
			500 times of dilution interpolation groups of the present invention	0.12±0.02	0.43±0.01

Experimental example 3: to raising the feature of the pork of producing and the analysis of component by supplying with feed addictive of the present invention

Feed weanling pig (Weaning pig) with the 50kg normal diet of feed addictive, feed growth pig (growing pig) and growing and fattening pigs (pattering pig) until selling when delivering with the 50kg normal diet of the feed addictive that has added 100g embodiment 1 with 50g embodiment 1.(Korean food sanitation research center) tests the composition of common pork of raise producing with normal diet and the pork of raising production with the feed that has added feed addictive of the present invention in Korean foods health research center.

The result, raising with the feed that has added feed addictive of the present invention in the pork of producing, the content of palmitoleic acid, gamma-linoleic acid, arachidonic acid, EPA, DHA all significantly increases, and the content of linoleic acid and crude protein is compared close or decline slightly with common pork.Especially, the content that forms brain cell and make brain become clever DHA is 5 times of common pork, therefore for the prevention AD good effect is arranged.Gamma-linoleic acid is that a kind of its content is about 3.4 times of common pork to pregnant woman and the helpful aliphatic acid of people that has a delicate constitution, so its ability of resisting multiple virus strengthened 3.4 times, so that immune effect significantly strengthens.In addition, comprise more unrighted acid, lard and pork are delicious more, comprise more unrighted acid by the pork of supplying feed addictive production of the present invention than common pork, about 55%.

Table 6: the result that pork content is analyzed

	Common pork	Supply the pork of feed addictive of the present invention
			Profile	Form and color with meat itself	Form and color with meat itself
Palmitoleic acid (mg/100g)	5402.4	5715.4
			Linoleic acid (mg/100g)	2411.2	2384.2
Gamma-linoleic acid (mg/100g)	15.7	53.5
			Leukotrienes (mg/100g)	178.5	185.2
Arachidonic acid (mg/100g)	105.5	141.3
			EPA(mg/100g)	6.7	18.6
DHA(mg/100g)	10.9	54.7
			Crude protein (%)	18.1	18.3

Experimental example 4: the test of boar smell of mutton and organoleptic feature

To boar, detect boar smell of mutton, body fat, stomach size, weight and pig excrements stink by raising with the similarity method of describing in the experimental example 3.

The result, there is not the boar smell of mutton and meat is anti-chews by the pork of supplying feed addictive production of the present invention, stomach size and intestines length are with respect to about 290% (referring to Fig. 3 and the Fig. 4) of increasing to of control group, in addition, weight increases to about 285%, therefore can improve the productivity ratio of pork, and the excretal odor of pig can be removed and as fertilizer.

Table 7: boar smell of mutton and sensory testing result

The invention effect

As mentioned above, the present invention has the effect of the feed addictive that is provided for producing the boar that does not have the boar smell of mutton, this feed addictive is to join in the another kind of solution of 100 weight portions by the cationic solution with the 20-30 weight portion to prepare, and wherein this cationic solution one or more of amount of comprising 0.001-10 weight % are selected from by Fe ²⁺, Mg ²⁺, Mn ²⁺, Ca ²⁺, Co ²⁺, K ⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Na ⁺Metal cation in the group of forming; Described another kind of solution is brown seaweed, bladder-wrack, sargassum and the crab shell by equivalent volumes, adds HCl then and carry out acid hydrolysis in the mixture that obtains, and with among the NaOH and post curing at least one month, filter then and produce.In addition, by supply with this feed addictive to boar, reach removal boar smell of mutton, strengthened immunity, reduced the death rate, increased internal organ and body weight and raising pork productivity ratio and so significantly reduced effect of supply of forage amount.In addition; there are not boar smell of mutton and ratio to have the content of higher DHA composition, gamma-linoleic acid, unrighted acid with the pork of normal diet production by the pork of supplying with feed addictive production of the present invention; and boar can be by animal lovers identification owing to do not castrate, so the present invention is of great use for domestic animal industry and animal protection industry.

Claims

1. feed addictive that is used to raise the boar that does not have the boar smell of mutton, described feed addictive is made by following steps:

First step, the brown seaweed of equivalent volumes, bladder-wrack, sargassum and crab shell add HCl then and carry out acid hydrolysis in the mixture that is obtained, and with among the NaOH and post curing at least 1 month, filter then;

Second step is with Fe, Mg, Mn, Cu, Zn, Mo and CaCO ₃Be dissolved in 5N HCl respectively and pass through cation-exchange membrane, with preparation Fe ²⁺, Mg ²⁺, Mn ²⁺, Cu ²⁺, Zn ²⁺, Mo ²⁺And Ca ²⁺Cationic solution, and with Co (NO ₃) ₂, KCl, NaCl be soluble in water and by cation-exchange membrane, with preparation Co ²⁺, K ⁺, Na ⁺Cationic solution; And

The cationic solution that 20～30 weight portions are obtained in second step joins in the solution that 100 weight portions obtain in first step, and wherein said cationic solution comprises one or more the metal cation of 0.001～10 weight %.

2. feed addictive according to claim 1, wherein said feed addictive is 0.005～0.05 weight % with respect to the addition of aggregate supply feed weight.

3. pork that does not have the boar smell of mutton, described pork are to produce by supplying with the feed addictive that is used to produce the boar that does not have the boar smell of mutton according to claim 1 and 2.