KR100322276B1 - Production technology of layers feed formula and its designed egg characterized by hard eggshell and pigmentation - Google Patents

Abstract

The present invention relates to a feed composition for laying hens containing a powder of oyster shell powder as a feed additive to enhance the color and eggshell quality of eggs, and a method for producing the same and special eggs prepared using the same feed composition. The manufacturing process of the feed composition for laying hens of the present invention is the step of removing the impurities and surface water through the washing, dehydration, washing the shells, and the step of immersing the shells in the organic acid solution through the electrical step, the immersion of the electrical step Dehydrating and drying the bark of the bark and then grinding it to a predetermined size and adding a predetermined amount of the bark powder to the general feed for laying hens can not only distribute the bark shell economically for a long time It is possible to economically provide eggs with enhanced carotenoid pigment and eggshell.

Description

Feed composition for laying hens to improve color and eggshell quality, and method for manufacturing and special egg prepared using the same feed composition {Production technology of layers feed formula and its designed egg characterized by hard eggshell and pigmentation}

The present invention relates to a feed composition for laying hens containing a powder of oyster shell powder as a feed additive to enhance the color and eggshell quality of eggs, and a method for producing the same and special eggs prepared using the same feed composition.

Pigments in food make the appearance of the product more prominent and play a decisive role in increasing consumer preference and product completion in the market. The importance of this color is especially emphasized in livestock, fish and farm products where the product is directly observed and distributed. The freshness, nutritional value, etc. of these products are mainly evaluated by their appearance, so the more they possess a vivid color, the higher the value.

The degree of pigmentation in livestock or farmed fish is directly related to the management status, growth and feed factors in the process of breeding or farming in the case of bright yellow-orange pigments. Especially in the case of feed factors, the color of egg yolk, farmed fish, broiler meat, shrimp shell, etc. depends on the content of flavonoids, β-carotene and xintophyll in the feed, but the amount of these natural pigments in nature This very small amount or the low rate of migration in the animal body results in almost no color of food desired by consumers. Therefore, most feed companies replenish the feed by adding synthetic pigments to solve these problems, and no pigments are consumed for feed, so there are no domestic pigment-related producers.

This phenomenon is because, in the past, the size of livestock and aquaculture fishery in our country was small and small, so it was managed to improve the productivity rather than the quality of the product. However, in recent years when products are being upgraded and functionalized and their size is also being enlarged and commercialized, the demand for these pigments is gradually increasing, and the amount of import is also increasing, and this situation is expected to continue to accelerate. Therefore, research on the development of such pigments in the domestic conditions is very urgent situation. However, since the necessity has only recently been detected, there is no accumulated technology and production facilities. At present, the domestic demand is dependent on foreign products.

Currently, most of the pigments used as colorants are synthetic carotenoid pigments. Actually, carotenoid pigments are a representative group of natural pigments of sulfur, light, red, and purple which are widely distributed in the flora and fauna in nature. As such, a huge amount of carotenoids is known to biosynthesize these pigments such as shells of aquatic organisms, plant leaves, zooplankton, algae, and some fish and poultry. In particular, through 30 years of epidemiological investigations and recent empirical experiments, not only some natural carotenoids were known to be carcinogenic substances, but they also exhibited higher order functionalities such as antioxidant activity, improved reproduction and growth rate of animals, suppression of disease occurrence and color improvement of fish meat. As it is known, its availability in various fields is increasing in the future. Therefore, if natural pigments are supplied through the feed of livestock animals or farmed fish, rather than the existing synthetic pigments, the quality of products may be improved, as well as the feed efficiency, fertility, and disease suppression of these animals may be additionally improved.

In particular, synthetic pigments, which are currently used by most domestic feed companies, have raised the issue of chemical stability as food additives.In some developed countries, artificial pigments are prohibited from adding artificial synthetic pigments to livestock and fish farming. Research is underway around the world, and in some countries colorants used to color egg yolk to yellow and salmon and trout to pink may affect children's vision. It is under consideration. Japan currently uses 100% natural colorants, Sweden has banned the use of synthetic colorants since 1991, and the United Kingdom has banned the use of artificial colorants since November 1998. According to Article 11 of the Fair Standards of the Feed Regulations (Summary of Feed-related Laws) proposed by the Ministry of Agriculture and Forestry and the Korean Feed Association in 1999, astaxanthin should be used only for feed for sea bream, salmon and trout. The content in blended feed is limited to 100g or less per ton. However, the amount of pigment actually used in trout farms is about 300g (300ppm) per ton, so the remaining shortage should be replaced with natural pigments. In addition, most of the pigments currently used are synthetic dyes, and 10% of the purity is currently 480,000 won per kg (ROCHE brand name Carophyll red and Yellow, fluctuating according to the exchange rate). More research is needed to identify and use them. In addition to physiological functions such as precursors of vitamin A, egg yolk and coloring effect of meat and epidermis, carotenoids also have functions for physiological activities such as anti-oxidation of lipids, enhancement of hormone function, and improvement of environmental adaptation ability. It is known.

Another major factor causing economic losses in the poultry industry is poor shell quality. In Korea, about 10% of egg production is estimated to disappear every year from egg laying to consumer. The incidence of blue was reported by Hamilton et al. (1979) that about 7% of production was lost to blue among consumers, and according to Karunajeewa (1977), 5-10% of production was reported as blue incidence each year. Henter et al. (1980) 4.77% of eggs are made from eggs that tend to become blue (thin-shell or soft-shell eggs).

In general, blue's biggest problem is egg production, which most directly affects the income of poultry farmers. Eggshell quality is affected by many factors, especially genetic factors, age, environmental temperature, lighting, climate, disease and nutrition. Egg shell quality can be improved first by breeding and selection, but breeding is almost all domestic laying hens selected from foreign countries. There are few domestically developed egg hens (Manina species). Because of this negative correlation, there is a limit to the selection strength to improve egg shell quality in breeding plans. At the same time, more than 60% of the changes in eggshell quality are influenced by other factors rather than genetic factors, such as nutrition, specification technology and management, and disease, so research on nutrition and specification technology is more active in Korea. In particular, there are no results that can be used in the field to improve the fundamental eggshell quality in our environmental conditions and specification conditions, and are considered for reference purposes only, and feed companies rely mainly on foreign data.

In Korea, the domestic self-sufficiency rate of feedstock for livestock production is extremely low, below 30%. In particular, the blue generation of eggs, which is the final product using feedstocks, not only makes the waste and utilization efficiency of national feed resources worse. In poultry farms, production costs rise. In addition, in the case of egg production costs 1.5 times more expensive than the United States, we need to find ways to reduce production costs. At present, the specifications, breeding, and feed production technologies for laying hens have reached the level of developed countries, but there is no fundamental prescription that can greatly reduce the blue incidence in Korea and other countries.

The inventors of the present invention, while seeking solutions to the problems of the prior art as described above, can be used to increase the coloration of eggs due to the carotenoids are rich in carotenoid shells that are currently discarded, and also rich in calcium and phosphorus related to egg quality The present invention was completed by finding out that it is excellent in strengthening the eggshell.

Accordingly, it is an object of the present invention to provide a feed composition for laying hens and a method of manufacturing the same as a feed additive, which is discarded so that the egg color is excellent and eggshell strength is enhanced.

It is still another object of the present invention to provide a method for circulating a bark of a living body in a long-term economical manner at room temperature while suppressing decay.

1 is a manufacturing process of the feed composition of the present invention.

Figure 2 is the change of egg yolk color according to the amount of shellfish added of the present invention

(Top: Oolong Shay Shell (4% Addition), Lower Left: Extraction Pigment, Lower Right: General Egg)

Although the coloration of eggs and poultry is not a factor in the nutritional value of eggs or chickens, consumers generally prefer dark yellows, and chickens infected with digestive problems or internal parasites do not usually absorb pigments well. The coloration of eggs is important to indicate the health of the chicken.

The coloring of chicken and eggs is caused by accumulation of xanthophyll belonging to carotenoid, a yellow pigment, in broiler's subcutaneous fat tissue or egg yolk, so the degree of coloring is proportional to the content of xanthophyll in the feed and the health of the chicken. Can be.

The present invention includes a feed composition for laying hens containing snail shell powder as a feed additive to enhance egg color and eggshell quality. The feed composition for laying hens of the present invention powders the slurred shells discarded in the laying composition for general laying hens and adds them to the feed to feed the laying hens, while the yellowness of egg yolk is strengthened, the strength of eggshells is enhanced, and the blue rate is increased. It is possible to produce special eggs which can be reduced.

Of the feed composition for laying hens of the present invention is not particularly limited, it is preferred to add less than 6% by weight based on the total feed composition when considering the color and eggshell strength, exceeding 6% by weight In this case, no additional effect can be expected, and the above range is preferable in consideration of economic aspects.

In addition, the particle size of the powder is not necessarily limited to a specific value. However, considering the absorption and digestibility of laying hens, it should be less than 50 mesh.

The shell of the larvae used in the present invention is rich in inorganic mineral elements and proteins such as calcium and phosphorus, as well as carotenoids, which are effective ingredients of the coloring agent, and can be applied as feed additives, and also greatly contribute to improvement of egg shell quality when applied to laying hens. Can be.

Table 1 and Table 2 show the results of the measurement of the general components, amino acid composition and the content of Ca and P for the Rhubarb husk powder (particle size of about 50 mesh) prepared by the present inventors, Table 3 shows the carotenoids of the Rhubarb husk The content and composition is shown.

<Table 1> General Ingredients of Shellfish Shells

Analysis item content(%) moisture 9.55 protein 39.42 Geology 0.43 Ash 6.34 Nitrogen Free extract 44.26

<Table 2> Ca, P and amino acid composition of shellfish shell

Item content(%) Ca 1.02 P 0.07 Mg 0.34 ASP 4.23 THR 1.17 SER 1.89 GLU 1.86 GLY 0.49 ALA 1.04 CYS 0.32 VAL 1.14 MET 0.17 ILE 0.75 LEU 1.48 TYR 0.14 PHE 0.15 HIS 0.49 LYS 1.91 ARG 2.02 sum 19.25

According to Table 1 and Table 2, 44.26% of NFE (nitrogen free extract), which is a non-extinguishing substance, is the highest, and the shell powder is considered to be a low calorie feed material, but the protein component is 39.42% and the mineral is 6.59%. It can be seen that it can be used as a feed additive. Lipids related to carotenoid pigments contained about 0.24%.

Ca and P contents related to the breakthrough strength and egg weight of eggshell are 1.02% and 0.07%, respectively, but they do not have the best ratio of 2: 1 to 2, but are combined with proteins that can promote Ca absorption. Since it is present in the form of the shell powder of the present invention is effective in increasing eggshell strength and eggshell weight increase. This is because 90-95% of the egg shell is CaCO ₃ and 60-75% of the calcium accumulated in the egg shell is supplied to the feed. Therefore, the Ca content in the feed is important and the maximum feed amount is known to be 3.5%. It is known to be influenced more by the physical form of Ca feeder than by Ca content. Next to Ca, the content of P is important. However, if the content of P in the feed is high, the mobilization of eggshell Ca can be suppressed and eggshell quality can be reduced. Mg is the second most abundant (about 0.59%) mineral in eggshell, and eggs are more egg-rich in eggplants. As the Mg / Ca ratio decreases, the hardness of eggshell decreases and Mg content in feed is 1.2%. If it is above, there exists a tendency for the thickness of an eggshell to reduce.

The highest amino acid composition was found in ASP, ARG, LYS, SER, GLU, THR, etc.

In addition, as the carotenoid component contained in the shell powder, Rungsheng is shown in Table 3 below.

<Table 3> Carotenoids in the Shellfish ^*

Carotenoids Rf value percent(%) Total concentration: 49.18 (mg / 100g whole body) β-carotene 0.97 0.9 Lutein 0.92 0.3 Zeaxanthin 0.86 1.2 Puthenon 0.70 0.8 Mytiolxanthone 0.63 10.8 Astaxanthin 0.60 7.8 Iloxanthin ** 0.52 31.3 Diatoxanthin 0.46 11.9 Diadinochrome 0.34 11.6 Halosxithiaxanthin 0.30 15.5 Mitilloxanthine 0.23 5.7 Fucoxanthin 0.14 1.4 Fucozantinol 0.11 0.8

* Ref-Bull.korean Fish. Soc 27 (4): 344-350

According to the results of Table 3, the content of alloxanthin and halosynthiaxanthin account for almost 50%, β-carotene, a precursor of vitamin A, contains about 0.9% of the total carotenoid content, and astaxanthin is about 7.8%. It is reported.

In addition, the present invention includes a method of producing a feed composition for producing special eggs having excellent pigmentation and at the same time excellent egg quality by powdering the shells and donating them as a feed source.

Figure 1 shows the manufacturing process of the feed composition for producing a special egg of the present invention, the present invention (1) to remove the shell and remove the impurities and surface water through washing and dehydration, (2) the shell Immersing in the organic acid solution, and (3) dehydrating the dried bark shells after immersion, drying and grinding them to a predetermined size, and (4) the bark shell powder obtained through the step (3) to the general feed for laying hens It consists of adding a predetermined amount.

In the step (1), washing with water may use fresh water, brine or seawater, and dehydration may be sufficient if left for several hours in a watertight or porous container.

Step (2) is a step introduced in order to increase the preservation of the shells, and this will be described in more detail as follows.

The step (2) includes the process of immersing the raw shells in an organic acid adjusted to a predetermined concentration, and available organic acids include, but are not limited to, acetic acid, citric acid, succinic acid, pH is 1.5 ~ 3.0 Preferably, it is more preferable to adjust to the range of 2.0-2.6.

Table 4 shows the preparation of 1-12% solution (pH 2.0-2.6) prepared for each type of organic acid according to the above, immersed for 48 hours, dehydrated in a porous container, and then stored at room temperature. The result of the investigation of the degree of occurrence is shown. According to the results, it can be seen that similar results are obtained for each type of organic acid. In addition, the occurrence of microorganisms by acetic acid concentration did not detect microorganisms until 14 days at acetic acid concentration of 1% or higher. Able to know.

Table 5 shows the color change according to the storage period for each concentration of acetic acid added at room temperature storage, it can be seen that there is no change in quality due to the carotenoid pigment content of the shells before and after acid treatment. Therefore, it can be seen that the raw bark shells can be stored by simple organic acid treatment even at room temperature rather than refrigerated or frozen.

<Table 4> Occurrence of Total Bacteria by Storage Period by Acetic Acid Concentration during Room Temperature Storage ^*

Addition amount (%) Storage period (days) One 3 6 9 12 14 0 432 × 10 ² 389 × 10 ³ 489 × 10 ⁷ 564 × 10 ⁹ 521 × 10 ¹¹ 489 × 10 ¹³ One - - - - - - 3 - - - - - - 6 - - - - - - 9 - - - - - - 12 - - - - - -

* 48 hours after each concentration

<Table 5> Changes in color appearance according to the storage period of Acetic acid addition concentration during storage at room temperature (symbol) ^{*, **}

Addition amount (%) Storage period (days) One 3 6 9 12 14 0 5.0 5.0 5.0 4.2 3.9 3.1 One 5.0 5.0 5.0 5.0 5.0 5.0 3 5.0 5.0 5.0 5.0 5.0 5.0 6 5.0 5.0 5.0 5.0 5.0 5.0 9 5.0 5.0 5.0 5.0 5.0 5.0 12 4.5 4.5 4.5 4.1 4.1 4.1

* After 48 hours immersion for each concentration,

** 5-point scoring method

In addition, the step (3) of the present invention is a step of dehydrating the dried bark shells after immersion as described above, and then grinding them, and the dehydration process requires sufficient and special limitations according to the method of leaving them in water or porous containers for several hours. In the step (3), the drying process may be natural drying, freeze drying, or hot air drying at about 40 to 60 ° C., and the grinding process may be performed using a roll mill and a cut mill to have a particle size of about 10 to 50 mesh. Powdering to a size thereof. In order to obtain the powder having the particle size, for example, after the primary grinding to a size of about 0.5mm thickness, which can be added to the roll mill, and then secondary grinding about 1 to 5 times with a roll mill to destroy the stone cells When the third grinding is performed once or three times with a cut mill, a powder having the particle size can be obtained. However, this is merely an example for explaining the present invention, but is not limited thereto.

Table 6 shows the results of measurement of palatability (color), total carotenoid pigment content, and chromaticity using the squirting shell powder. The woowook shell powder used in Table 3 was immersed-dehydrated woowook bark in 4% acetic acid (pH 2.3) solution for 48 hours and then dried by drying method (natural drying, freeze-drying, low temperature hot air drying), the bark shell After grinding roughly to a thickness of about 5 mm, the second mill was pulverized 1 to 5 times with a roll-mill, and the third mill was pulverized 1 to 3 times with a cut mill, having a particle size of about 50 mesh. According to the above process, crushed stone cells, which are generally difficult to crush, can be effectively crushed.

<Table 6> Changes in palatability, chromaticity and carotenoid pigment content according to the drying method of the bark shells.

Drying method Symbol ^* Total carotenoid content (mg%) Chromaticity L a b Natural drying 3.1 7.52 36.03 10.38 21.63 hot air dry 4.5 10.12 49.62 8.71 23.12 Freeze drying 4.1 10.68 66.60 9.14 26.01

* 5-point scoring method

In addition, the step (4) of the present invention includes the step of adding a predetermined amount of the snail skin powder of step (3) to the general feed for laying hens. It is difficult to specifically limit the amount of wadded bark powder to the laying composition for laying hens, depending on the content of the active ingredient of the wadded bark, and depending on the age distribution of the hen. In consideration of the above, it is preferable to add 6 wt% or less in order to sufficiently exhibit the effect intended in the present invention. However, as described above, the numerical value of the content may be changed slightly depending on the situation, which will be apparent to those skilled in the art without departing from the scope of the present invention.

In addition, the present invention includes a special egg prepared using the feed composition. The special eggs are characterized in that the carotenoid pigment and eggshell-enhanced components contained in the shells are efficiently transferred into the body during feeding of the laying hens, and thus have excellent color and eggshell quality.

Hereinafter, the contents of the present invention will be described in more detail with reference to the embodiment of the feed composition for laying hens of the present invention.

<Example 1>

The average spawn performance and egg weight (warm weight) of the oyster shell powder (about 50 mesh particle size) according to the present invention was added to 0 to 7% of laying hens for 8 weeks in laying hens.

<Table 7> Scattering results according to addition

Treatment % Scattering Egg weight (g) Control 90.55 ± 6.69 52.21 ± 1.67 1% of Shellfish Shell 89.19 ± 7.88 52.23 ± 1.48 2% Shellfish Shell 90.14 ± 6.12 52.25 ± 1.64 3% Shellfish Shell 90.25 ± 6.54 52.11 ± 1.37 4% Shellfish Shell 89.24 ± 7.75 52.19 ± 1.59 5% Shellfish Shell 89.49 ± 7.56 52.16 ± 1.28 6% Shellfish Shell 89.56 ± 7.23 52.16 ± 1.32 7% 85.12 ± 6.98 50.25 ± 1.44

Egg production and egg weight tended to be similar to those of normal feed (control) when 1 ~ 6% of the shells were added to laying hens, but egg production and egg weight were slightly decreased. . Therefore, the addition of 1% to 6% of henling bark in laying hens did not affect laying performance of laying hens.

<Example 2>

Egg yolk husk (about 50 mesh particle size) according to the present invention was added to 0 to 7% in laying hen diet and fed to 29-week-old laying hens for 8 weeks.

<Table 8> Changes in egg yolk color according to the amount added

(Unit: Roche color fan score) *

Treatment District 3 days 1 week 2 weeks 3 weeks Control 7.4 ± 0.9 7.9 ± 1.1 7.4 ± 0.8 7.3 ± 0.6 1% of Shellfish Shell 9.1 ± 0.8 11.1 ± 1.2 11.6 ± 0.7 11.2 ± 0.7 2% Shellfish Shell 10.5 ± 0.9 11.9 ± 1.0 12.4 ± 1.1 12.0 ± 0.8 3% Shellfish Shell 11.4 ± 0.8 13.7 ± 1.1 14.4 ± 0.7 15.1 ± 0.7 4% Shellfish Shell 13.8 ± 0.9 17.9 ± 1.2 18.2 ± 0.7 17.0 ± 0.6 5% Shellfish Shell 14.1 ± 0.8 18.1 ± 1.2 18.4 ± 0.7 17.8 ± 0.6 6% Shellfish Shell 14.2 ± 0.8 18.4 ± 0.8 18.4 ± 0.9 18.1 ± 0.7 7% 15.2 ± 0.9 15.4 ± 0.9 18.5 ± 1.1 18.1 ± 0.7

* Colorimetric method of commercially used egg yolk

Carotenoid pigment is a fat-soluble substance that is added to laying hens and fed to chicken tends to accumulate in egg yolks. Egg yolk is dark yellow depending on the accumulated carotenoid content, and the degree of yellow color is indicated by Roche color fan score. Egg yolk of the most preferred egg is Roche color fan score 12-13 and egg yolk of normal egg is 6-7. Overall, carotenoid accumulation tended to increase as the amount of barley shells increased in laying hens. The minimum level of 1 ~ 2% added showed similar levels to the ideal Roche color fan score 12 ~ 13. Roche color fan scores of 17-18 were more than 3%, indicating that the accumulation of carotenoids increased rapidly as the amount of addition increased, but the accumulation rate tended to be lower than 4%. Therefore, egg yolk carotenoid accumulation is much higher than Roche color fan score 12 ~ 13 and egg production rate and egg weight are expected to decrease due to reduced digestibility. It is desirable to.

<Example 3>

The results of measuring the breaking strength and specific gravity of the eggs laid after 8 weeks of feeding to 29-week-old hens by adding 0 to 7% of the oyster shell (about 50 mesh of particle size) to laying hens' diets same.

<Table 9> Fracture Strength of Eggshells by Addition of Shellfish Shell (Unit: kg / 19.5mm ² )

Treatment District Week 0 1 week 2 weeks 3 weeks Control 3.68 ± 0.24 3.64 ± 0.23 3.61 ± 0.25 3.62 ± 0.22 1% of Shellfish Shell 3.63 ± 0.19 3.71 ± 0.21 3.82 ± 0.24 3.89 ± 0.15 2% Shellfish Shell 3.65 ± 0.21 3.75 ± 0.22 3.85 ± 0.17 3.95 ± 0.21 3% Shellfish Shell 3.59 ± 0.18 3.75 ± 0.19 3.89 ± 0.23 4.11 ± 0.16 4% Shellfish Shell 3.59 ± 0.19 3.88 ± 0.17 4.06 ± 0.14 4.55 ± 0.18 5% Shellfish Shell 3.61 ± 0.17 3.91 ± 0.14 4.14 ± 0.15 4.57 ± 0.17 6% Shellfish Shell 3.60 ± 0.19 3.94 ± 0.16 4.16 ± 0.19 4.58 ± 0.18 7% 3.67 ± 0.21 4.01 ± 0.21 4.21 ± 0.13 4.61 ± 0.24

<Table 10> Changes in Egg Weight with Addition of Oyster Shells

Treatment District Week 0 1 week 2 weeks 3 weeks Control 1.024 ± 0.002 1.031 ± 0.003 1.022 ± 0003 1.024 ± 0.003 1% of Shellfish Shell 1.024 ± 0.003 1.032 ± 0.003 1.031 ± 0002 1.034 ± 0.003 2% Shellfish Shell 1.025 ± 0.002 1.032 ± 0.003 1.035 ± 0003 1.037 ± 0.003 3% Shellfish Shell 1.024 ± 0.002 1.033 ± 0.003 1.043 ± 0003 1.045 ± 0.002 4% Shellfish Shell 1.025 ± 0.004 1.033 ± 0.003 1.047 ± 0.002 1.049 ± 0.002 5% Shellfish Shell 1.024 ± 0.004 1.036 ± 0.003 1.049 ± 0.002 1.050 ± 0.002 6% Shellfish Shell 1.024 ± 0.004 1.037 ± 0.003 1.048 ± 0.002 1.050 ± 0.002 7% 1.025 ± 0.004 1.036 ± 0.003 1.049 ± 0.002 1.051 ± 0.002

The breaking strength of eggshell showed a tendency to decrease gradually in the control egg, but the eggshell shell added increased rapidly. This effect was apparent from 2 weeks, and at 3 weeks, the breaking strength was increased by 26% compared to that of the normal eggs. Overall, the breaking strength of eggshells tended to increase rapidly as the amount of addition increased.

Egg specific gravity also showed the same tendency as breaking strength, but the control eggs, which were normal eggs, showed a tendency to decrease or maintain gradually. However, eggshell shells showed a sharp increase, and the eggshell weight increased significantly. This effect was apparent from 2 weeks, and at 3 weeks, the 4% added group showed an increase of 2.4% compared to the general eggs. In general, egg weight tended to increase rapidly as eggshell breaking strength increased, but the increase decreased more than 4%.

The present invention relates to a method of effectively using the sea urchin shell, which is a coastal environmental pollution source, and according to the present invention, it is possible to economically distribute the sea urchin shell for a long time and economically provide eggs with enhanced carotenoid pigment and eggshell using this. . According to the present invention, by effectively using the coastal waste shells, it contributes to the elimination of coastal pollutants and the increase of income of farmed fishers, and to the livestock farmers by providing a method for producing carotenoid pigment and egg fortification for low cost It is expected to reduce the production cost of eggs, solve the problems caused by the use of synthetic materials, and greatly reduce the secondary economic loss caused by blue.

Claims (7)

A feed composition for laying hens for improving colorability and eggshell quality, the feed composition for improving colorability and eggshell quality, characterized in that the feed additive is a shell powder to a known feed composition. The composition of claim 1, wherein the woolyui shell powder is added in an amount of 6 wt% or less based on the total feed composition. The composition of claim 1, wherein the fermented bark shell powder has a particle size of 50 mesh or less. In the manufacturing method of the feed composition for laying hens for improving the coloring and eggshell quality, Collecting the bark shells to remove impurities and surface water through washing and dehydration, immersing the bark shells subjected to the electric step in an organic acid solution, and dehydrating and drying the bark shells after the electric step immersion. Comprising the step of grinding to a size and adding a predetermined amount of the woowook shell powder for laying hens, characterized in that the method of producing a composition for laying hens for improving colority and egg shell quality. The method according to claim 4, wherein the concentration of the organic acid is 1 to 12%, the pH is 1.5 to 3.0 characterized in that the method for producing a laying composition for laying hens for improving the color and egg shell quality. The method of claim 4, wherein the shell powder is added to the particle size of 50 mesh or less based on the total feed composition of 6% by weight or less, characterized in that the method for producing a laying composition for laying hens for improving color and egg shell quality. Special egg with improved color and eggshell quality, characterized in that the feed composition prepared by using the method of any one of claims 4 to 6 is obtained by feeding the laying hens.