Poultry feed mixture for producing functional chicken egg containing lauric acid and method for producing functional chicken egg containing lauric acid

Abstract

To provide a method for producing a functional chicken egg containing lauric acid, which is capable of enhancing profitability and lowering costs in poultry operations and is practically and industrially practicable, and a poultry feed mixture for producing the functional chicken egg containing lauric acid used therein.SOLUTION: A method for producing a functional chicken egg containing lauric acid, comprising at least the following steps: a mixing and stirring step of obtaining a poultry feed mixture by mixing and stirring 2 pts.mass or more and 10 pts.mass or less of lauric acid in a powder or granular form, 0.05 pt.mass or more and 0.1 pt.mass or less of CMF (cellulose microfibre) in a powder or granular form, and a standard formulated feed, based on 100 pts.mass of a poultry feed mixture; a feeding step of feeding the resultant poultry feed mixture to laying hens for a duration of 10 days or more and 15 days or less; and a transfer step which causes lauric acid to transfer into the chicken egg with the commencement of feeding, so that the lauric acid is contained in the chicken egg.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a poultry feed mixture for producing functional eggs containing lauric acid and a method for producing functional eggs containing lauric acid. [Background technology]

[0002] In recent years, the medium-chain fatty acids contained in lauric acid powder, such as lauric acid, have been shown to have roughly half the carbon number of the long-chain fatty acids commonly used in vegetable oils. They do not require bile acids for digestion and absorption, and are absorbed directly into the cells of the small intestine and transported directly to the liver. Because of this property, medium-chain fatty acids are easily broken down into energy, leading to their use in medical applications such as post-operative liquid diets and nutritional support for premature infants. Furthermore, their rapid decomposition is known to prevent fat accumulation in the body. Other known benefits of medium-chain fatty acids include increasing hormones that help prevent diabetes.

[0003] Meanwhile, in recent years, the poultry industry has been producing eggs enriched with specific ingredients to increase the added value of eggs. Furthermore, due to the growing health consciousness of general consumers, sales of such enriched eggs have been steadily increasing. Known specific ingredients include fat-soluble vitamins and various minerals.

[0004] Generally, poultry feed can be broadly classified into compound feed and home-mixed feed. Compound feed is feed with adjusted nutrients that is made by mixing and processing various ingredients such as corn, milo, wheat, bran, defatted rice bran, soybean meal, fish meal, alpha-alpha meal, and calcium. Home-mixed feed is feed that is mixed in-house, making effective use of home-grown or locally produced ingredients. The choice of which feed to use depends on the management policy of each poultry farmer. Both have their advantages, and the advantages of choosing compound feed include less variation in nutritional value and high shelf life. On the other hand, the advantages of choosing home-mixed feed include the ability to mix specific ingredients into the feed and have the chickens ingest it, allowing those specific ingredients to be transferred to the eggs. Of course, it is also common practice to mix specific ingredients into compound feed to create poultry feed.

[0005] It is known that various effective specific components can be transferred to chicken eggs by using home-mixed feed with these advantages. The following invention has been disclosed, which incorporates medium-chain fatty acids into poultry feed with the aim of transferring and incorporating medium-chain fatty acids, among other specific components, into chicken eggs.

[0006] Patent Document 1 discloses an invention of chicken feed that has excellent effects in improving nutrition and feed efficiency, improves egg production rate and increases egg weight in laying hens, and suppresses body fat formation in broilers.

[0007] Furthermore, Patent Document 2 discloses an invention relating to a poultry feed mixture in which coconut endosperm and its skin are added to poultry feed and administered to chickens, thereby transferring the medium-chain fatty acids contained in coconut lipids to chicken eggs and further reducing cholesterol in the eggs.

[0008] The chicken feed invention described in Patent Document 1 and the poultry feed mixture invention described in Patent Document 2 are potentially useful inventions from the perspective of transferring medium-chain fatty acids to chicken eggs. However, Patent Document 2 uses coconut endosperm itself or the endosperm husk, which is pre-powdered, resulting in a low transfer rate of medium-chain fatty acids to chicken eggs. Furthermore, lauric acid powder is solid at room temperature, so it cannot simply be incorporated into chicken feed. At present, it cannot be said that effective means or methods for more efficient transfer to chicken eggs have been established.

[0009] In view of the above circumstances, the present inventors have disclosed in Patent Document 3 an object of providing a poultry feed composition for transferring to eggs medium-chain fatty acid components such as lauric acid, which do not transfer into eggs in ordinary compound feed, and a method for producing functional eggs containing lauric acid powder granules, the object of which is to provide a poultry feed composition for producing functional eggs containing lauric acid powder granules, and a method for producing functional eggs containing lauric acid powder granules, the method comprising the steps of: a dissolving step of heating the lauric acid powder granules to a temperature close to or below their melting point to dissolve the lauric acid powder granules; a mixing and stirring step of mixing and stirring the liquid lauric acid powder granules with ordinary compound feed to obtain a poultry feed composition; a feeding step of feeding the obtained poultry feed composition to laying hens; and a transfer step of transferring the components in the lauric acid powder granules into eggs.

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-288362 [Patent Document 2] Japanese Patent Application Publication No. 3-198748 [Patent Document 3] Japanese Patent Publication No. 2022-54059 Summary of the Invention [Problem to be solved by the invention]

[0011] In the method for producing functional eggs disclosed in Patent Document 3, coconut oil, which is a lauric acid granule that is solid at room temperature, must be heated to mix with poultry feed. This requires a dissolution process in which the lauric acid granules are heated to near their melting point or below to dissolve the lauric acid granules. However, the production equipment suffers from the problem that the lauric acid granules, coconut oil, solidifies upon returning to room temperature, causing problems with the production machinery. This problem has made it extremely difficult to industrially implement and popularize the method for producing functional eggs disclosed in Patent Document 3.

[0012] Even before the problems with the production method of functional eggs mentioned above, the poultry farming industry had the following problem. The feces excreted by farmed chickens tend to be soft, and if there is an excess of soft feces, it will adhere to the eggs that are laid, causing many eggs to have to be discarded. Specifically, especially in the summer, chickens drink a lot of water, which results in an excess of soft feces, and as many as 10% of the eggs will be discarded, lowering the commercialization rate. Moreover, this soft feces is fermented at each poultry farm and distributed as fertilizer, which means that the cost is incurred using secondary materials, and the moisture content is reduced to 60% or less by electrical drying before being distributed as fertilizer. Therefore, in achieving the above-mentioned objectives regarding the method for producing functional eggs, it is important to resolve the problems caused by the soft feces excreted by farmed chickens, thereby increasing profits in the poultry farming business and reducing costs.

[0013] The present invention has been made in view of the above circumstances, and aims to provide a method for producing functional eggs containing lauric acid, which can increase profits and reduce costs in poultry farming businesses and can actually be implemented industrially, and a poultry feed mixture for producing functional eggs containing lauric acid to be used therein. [Means for solving the problem]

[0014] As a result of intensive research into achieving the above object, the present inventors have focused on lauric acid powder and granules, and have found that the above-mentioned problems can be solved by adding a specific amount of lauric acid powder and granules to poultry feed, mixing and stirring the poultry feed with the lauric acid powder and granules, and feeding the mixture to laying hens, thereby completing the present invention.

[0015] That is, the method for producing functional eggs containing lauric acid according to the present invention is a method for producing functional eggs containing lauric acid, characterized by comprising at least the following steps: The obtained functional eggs containing lauric acid are characterized in that the content of lauric acid is (30 mg to 55 mg) / 100 g. A mixing and stirring process for obtaining a poultry feed mixture by mixing and stirring powdered lauric acid in a range of 2 parts by mass to 10 parts by mass, powdered CMF (cellulose microfiber) in a range of 0.05 parts by mass to 0.1 parts by mass, and general compound feed, per 100 parts by mass of the poultry feed mixture. A feeding process in which the obtained poultry feed mixture is fed to laying hens for a period of 10 to 15 days. The transfer process of lauric acid into eggs [Effects of the Invention]

[0016] The present invention provides a method for producing functional eggs containing lauric acid, which can increase profits and reduce costs in poultry farming businesses and is actually industrially feasible, and a poultry feed mixture for producing functional eggs containing lauric acid used in the method. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a flowchart of a method for producing functional eggs containing lauric acid according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, the embodiments of the present invention will be described in more detail. In the present invention, the lauric acid powder or granule has a lauric acid content of 98% by mass or more, which is a saturated fatty acid having 12 carbon atoms, and is exemplified by Lauric Acid 98 (trade name) manufactured by Miyoshi Oil & Fats Co., Ltd. In the present invention, these lauric acid powder or granules may be used alone or in combination of two or more kinds.

[0019] The method for producing functional eggs containing lauric acid according to the present invention will be described with reference to Figure 1. As shown in Figure 1, first, a mixing and stirring step is carried out in which lauric acid powder, CMF (cellulose microfiber) in a powdery state, and general mixed feed are mixed and stirred to obtain a poultry feed mixture according to the present invention. Next, the resulting chicken feed mixture is fed to laying hens in a feeding step, and lauric acid is transferred to eggs in a transfer step, to obtain functional eggs containing lauric acid.

[0020] Here, "general compound feed" refers to a commonly used compound feed for chickens, which uses grains, protein sources, oils and fats, vitamins, and minerals as ingredients, and its composition is generally about 60% corn, about 20% soybean meal, about 5% rapeseed meal, about 1-3% fish meal, about 1-3% animal fats and oils, about 8% calcium, and a few percent of other ingredients. Furthermore, the general chicken feed used in the present invention is not limited to these, and may be one that uses a variety of ingredients or feed used in ordinary households that raise egg-laying hens.

[0021] In the mixing and stirring step, 2.0 to 10.0 parts by mass, preferably 4.0 to 6.0 parts by mass, of lauric acid powder and granules are blended with 100 parts by mass of general mixed feed, followed by mixing and stirring to obtain a poultry feed mixture. If the amount is less than 2.0 parts by mass, the lauric acid in the lauric acid powder and granules is not sufficiently transferred to the eggs, while if it is more than 10.0 parts by mass, the taste changes, reducing the appetite of chickens and adversely affecting productivity. Known means for mixing and stirring, such as a mixer, can be used.

[0022] In the mixing and stirring step, 0.05 to 0.1 parts by mass of powdered CMF (cellulose microfiber) is mixed with 100 parts by mass of general mixed feed, and the mixture is stirred to obtain a poultry feed mixture. As this powdered CMF (cellulose microfiber), the CMF (cellulose microfiber) disclosed in JP 2023-109972 A can be used. A specific example of a commercial product is Cellenpia CS-01, an industrial cellulose microfiber sold by Nippon Paper Industries Co., Ltd. Carboxymethylated CNF, which has the same chemical structure as CMC (carboxymethyl cellulose), a food additive with a long history, can be used in food, cosmetics, and other applications and is supplied as a dry powder. This carboxylated CNF is a nanofiber with a broad fiber width of several to several hundred nanometers.It is a light and strong fiber that exhibits characteristic rheological behavior in water and can be used as a food additive. By adding carboxylated CNF to food in this way, the viscosity, water retention, and shape retention properties of CNF can be utilized. By feeding the chickens a poultry feed mixture obtained by mixing and stirring powdered CMF (cellulose microfiber) in this way, the feed conversion rate can be improved by adjusting the intestinal flora of the chickens, and the moisture in the intestines can be reduced through hygroscopic action, thereby reducing loose stools and improving the marketability rate. In other words, if there is an excess of loose feces, it will adhere to the ovulated eggs, causing many eggs to have to be discarded. Specifically, especially in the summer, chickens drink a lot of water, which can result in an excess of loose feces, and the discarded eggs can reach 10%. Therefore, by reducing such loose feces, the market rate can be improved. If the addition rate is less than 0.05 parts by mass, a sufficient moisture absorption effect cannot be obtained. On the other hand, if the amount exceeds 0.1 parts by mass, excessive moisture absorption occurs, causing excretory disorders in chickens.

[0023] In the feeding step, the poultry feed mixture is fed to layer hens at 100 to 120 g / day. The feeding step must be continued for 10 to 15 consecutive days. If the amount or administration period is less than the above range, sufficient effects cannot be expected, and if the amount administered is greater than the above range, side effects such as indigestion may occur.

[0024] In the transition process, lauric acid is transferred into the eggs as the feeding of the raw materials begins, and is contained in the eggs. By continuously feeding the chicken feed mixture every day for 10 to 15 days, lauric acid is contained in the eggs.

[0025] Cordyceps powder can be added to poultry feed mixtures. Cordyceps is a general term for fungi that parasitize insects and spiders, forming sclerotia, which are aggregates of mycelium, inside the body, and then forming rod-shaped fruiting bodies from the insect's head or joints. The mysterious name "Cordyceps" is said to have come from the belief that it is an insect in winter and turns into grass (mushroom) in summer.

[0026] Generally, what is called Cordyceps includes fungi and fruits of higher plants, rather than insects. However, the original term Cordyceps refers to the complex of the ascomycete Cordyceps sinensis (BERK.) SACC. and the larvae of its host, the bat moth (Hepialus armoricanus OBER).

[0027] Cordyceps is mainly found in the Sichuan, Yunnan, Gansu, Qinghai, Hubei, and Zhejiang provinces of China, as well as Tibet and Bhutan. Depending on its size, it is classified into three types: "Cordyceps King," "Cordyceps Sinensis," and "Cordyceps Bachu," and Cordyceps Bachu is the type that is mainly imported to Japan.

[0028] The main medicinal components of Cordyceps are reported to be 7% cordyceptic acid (an isomer of quinic acid), sterols (ergosterol, cholesterol, campesterol, sitosterol), and the antibacterial component cordycepin. In recent years, its effectiveness in improving the quality of life (QOL) and cellular immunity of cancer patients after chemotherapy, as well as improving liver function in patients with hepatitis B, has also been recognized.

[0029] Adding Cordyceps powder to chicken feed mixtures has the effect of improving the physical condition of chickens and increasing egg productivity from healthy chickens. The amount of Cordyceps sinensis powder to be added to 1 ton of poultry feed is 10g, which is based on the effective dose for a 2kg chicken, based on the fact that the effective dose for a 60kg human body is 0.1g / day. [Example]

[0030] The present invention will be described below based on examples, but the present invention is not limited to these examples.

[0031] Examples 1 to 5 Materials and Methods (1) Laying hens Boris Brown, 100 birds

[0032] (2) Test feed Poultry feed mixtures (Examples 1 to 5) were prepared by mixing and stirring a general compound feed shown in Table 1 with lauric acid powder (Lauric Acid 98 (trade name) from Miyoshi Oil & Fats Co., Ltd.) in the amount shown in Table 2. Furthermore, as comparative examples, compound feeds (Comparative Examples 1 to 3) were prepared by using a general compound feed and adjusting the amount of lauric acid powder in the feed to the amount shown in Table 3.

[0033] [Table 1]

[0034] [Table 2]

[0035] (3) Test eggs Laying hens (Boris Brown, 100 hens, 300 days old) divided into 5 groups (Examples 1 to 5) were fed the chicken feed mixture shown in Table 2 at a fixed rate of 120 g / day / hen for 14 days, with water provided ad libitum, to obtain eggs through a transfer process in which lauric acid is transferred to the eggs. At this time, 0.1 to 1 part by mass of Cordyceps sinensis powder was added to the chicken feed mixtures of Examples 1 to 5 per 100 parts by mass of the chicken feed mixture. Next, we asked the Food Research Institute of the Toyama Prefectural Agriculture, Forestry and Fisheries Technology Center to analyze the lauric acid in chicken eggs.

[0036] [Table 3]

[0037] The above analysis results reveal that by feeding laying hens the poultry feed mixture of the present invention containing 2 to 6 parts by mass of lauric acid powder and granules for a period of 10 to 15 days, eggs containing (30 mg to 55 mg) / 100 g of lauric acid can be obtained. It was also found that when the lauric acid powder content is less than 2 parts by mass, lauric acid is not sufficiently transferred to the eggs.Furthermore, it was found that when the lauric acid powder content exceeds 10 parts by mass, the chickens' appetite decreases due to a change in taste, which has a negative impact on productivity.

[0038] The following six subjects were asked to eat two eggs (45-55g / 100g) obtained in Examples 3 to 5 (2 eggs / day) for two months, and their HbA1c (hemoglobin A1c) levels were measured after two months. The subjects' attributes and measurement results are shown in Table 4 below.

[0039] [Table 4]

[0040] The following three subjects were asked to eat two eggs (45-55g / 100g) obtained in Examples 3 to 5 (2 eggs / day) for two months, and their triglyceride levels were measured after two months. The subjects' attributes and measurement results are shown in Table 5 below.

[0041] [Table 5]

[0042] The following six subjects were asked to eat two eggs (45-55g / 100g) obtained in Examples 3-5 per day for three months, and their LDL (bad cholesterol) levels were measured after three months. The subjects' attributes and the measurement results are shown in Table 6 below.

[0043] [Table 6]

[0044] The measurement results in Tables 4, 5 and 6 reveal that the eggs obtained by the production method of the present invention have the function of lowering HbA1c (hemoglobin A1c) levels, triglyceride levels and bad cholesterol. Example 6 The room temperature in the chicken coop was kept constant (20-25°C), and the chickens were fed a mixture of 0.05 to 0.11 parts by mass of Cellenpia CS-01, an industrial cellulose microfiber sold by Nippon Paper Industries Co., Ltd., per 100 parts by mass of compound feed, and the moisture content of the feces was measured. [Table 7] When the amount of Cellenpia CS-01 added was less than 0.05, the moisture content of the feces was 70%, indicating soft stool. Conversely, when the amount of Cellenpia CS-01 added exceeded 0.11, the moisture content was low and fermentation of the feces was observed.

Claims

1. A method for producing functional eggs containing lauric acid, comprising at least the following steps: The obtained functional eggs containing lauric acid are characterized in that the content of lauric acid is (30 mg to 55 mg) / 100 g. A mixing and stirring process for obtaining a poultry feed mixture by mixing and stirring powdered lauric acid in a range of 2 parts by mass to 10 parts by mass, powdered CMF (cellulose microfiber) in a range of 0.05 parts by mass to 0.1 parts by mass, and general compound feed, relative to 100 parts by mass of the poultry feed mixture. A feeding step of feeding the obtained poultry feed mixture to laying hens for a period of 10 days or more and 15 days or less. ・Lauric acid is transferred into the eggs as feeding begins, and the transition process in which lauric acid is contained in the eggs

2. 2. The method for producing functional eggs according to claim 1, wherein Cordyceps sinensis powder is added to the chicken feed mixture.

3. By consuming the eggs obtained by the method for producing functional eggs according to claim 1, A method for producing functional eggs containing lauric acid, characterized by having the functionality of lowering HbA1c (hemoglobin A1c).

4. By consuming the eggs obtained by the method for producing functional eggs according to claim 1, A method for producing functional eggs containing lauric acid, characterized in that the rate of decrease in HbA1c (hemoglobin A1c) per two months is 3.1% or more.

5. By consuming the eggs obtained by the method for producing functional eggs according to claim 1, A method for producing functional eggs containing lauric acid, characterized by having the functionality of lowering neutral fat levels.

6. By consuming the eggs obtained by the method for producing functional eggs according to claim 1, A method for producing functional eggs containing lauric acid, characterized by having the functionality of lowering bad cholesterol (LDL).

7. By consuming the eggs obtained by the method for producing functional eggs according to claim 1, A method for producing functional eggs containing lauric acid, characterized in that the rate of decrease in bad cholesterol (LDL) per three months is 4.6% or more.

8. A poultry feed mixture used in the method for producing functional eggs containing lauric acid according to any one of claims 1 to 7, A poultry feed mixture for producing functional eggs containing lauric acid, characterized in that it contains at least lauric acid in a powdery state in a range of 2 parts by mass to 10 parts by mass per 100 parts by mass of the poultry feed mixture.

9. The poultry feed mixture for producing functional eggs containing lauric acid according to claim 8, wherein Cordyceps sinensis powder is added to the poultry feed mixture.

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