KR20080007091A - Method for manufacture fodder for domestic eel - Google Patents

Abstract

A method for preparing the feed for cultivating an eel, and the feed for cultivating an eel prepared by the method are provided to allow the quality of fish to be hard, to reduce the dead rate remarkably and to improve the growth rate of an eel. A method for preparing the feed for cultivating an eel comprises the steps of mixing 30 parts by weight of a barley powder, 30 parts by weight of a wheat powder, 30 parts by weight of a seaweed powder and 5-10 parts by weight of a fish oil based on 100 parts by weight of fish; mixing 100 parts by weight of the obtained first feed with 0.05-0.2 parts by weight of a green tea concentrate prepared by extracting the leaves of green tea at a low temperature and 0.01-0.2 parts by weight of a pine pollen powder and mixing it with 5-15 parts by weight of a fig liquor based on the 100 parts by weight of the green tea concentrate; drying it to allow the water content to be 40-50 %; and molding it with heating at 100-120 deg.C.

Description

Method for manufacturing fodder for eel farming and feed produced thereby

The present invention relates to a feed for fish farming, and more particularly to a method for producing a feed for eel farming and eel farming feed using the same.

Recently, as the awareness that seafood is a health food spread, the consumption of aquatic products has increased, and fish farming has also increased in quantity.

However, due to the recent coastal pollution and aquatic diseases, the supply of fishery products through fish farming has not increased significantly. The reason for this is found in the fact that the fisheries have not been actively developed. Due to the deterioration of the farming environment accompanied by the pollution of fisheries, productivity has decreased significantly due to the exposure of aquaculture organisms to diseases throughout the year.

As a result, more than 10% of the annual production cost of marine cages and land flounder farms is being used for disease prevention and treatment. In addition, as a result of abuse of various drugs for the purpose of preventing or treating diseases of aquaculture organisms, food stability of aquaculture organisms is reduced and disease resistance is not only worsened. This is amplifying, and the acceptability for aquaculture is falling greatly.

Therefore, in order to supply fresh farmed fish with food stability without the use of various aquatic medicines and antibiotics, vaccination against specific pathogens is actively used before the disease occurs, or the immune function of the fish is strengthened by the administration of immune enhancing substances. It is essential.

As such, research on a substance that enhances the immunity of the fish itself to resist an unspecified disease has been widely studied. Such substances include β-glucan (Won et al., 2004) and levamisole (Kajita et al., A parasite control agent). al., 1990), EF203 (Yoshida et al., 1993), an egg-derived product, and citrus fermentation broth (Song et al., 2002), and various kinds of seaweed, kelp, and green seaweed. Seaweeds (Choi et al., 1995; Nakagawa et al., 1985; Yone et al., 1996) have been studied in various ways.

In particular, recently, various herbal supplements have been reported to improve feed efficiency and increase immune function (Hwang et al., 1999; Kwon et al., 1999). There is a lack of research on substances that can enhance immunity.

Eel, on the other hand, is a high protein stamina food and contains a lot of vitamins A, B and E. In addition, eel fat contains abundant DHA 1332mg, EPA 742mg and lecithin. Lecithin is the main component of the human cell membrane and is indispensable for brain cells.

The eel is divided into several stages of growth, and it is a unique species that cannot artificially spawn and hatch. Because of its physiological characteristics, eel must be caught and cultured in a suitable environment. In the process, various infectious diseases such as bacterial diseases and parasitic diseases due to the mass density of aquaculture are caused, and many cases of farmed eel die.

To prevent this, antibiotics for bacterial diseases are added to feed or water for farming in order to control various fish pathogens, but it is not effective for infectious diseases caused by pathogens such as viruses and some parasites. Even though extreme physical methods such as water temperature control and fresh water are used, they do not cope effectively with the prevention and treatment of infection.

Investigating the causes of infectious diseases common in marine fish farms, deteriorating factors and improvement measures of farming environment, reducing factors and countermeasures against aquaculture fish diseases, investigating the types and symptoms of multiple diseases by fish species, The establishment of prevention and treatment measures is urgently needed.

Republic of Korea Patent No. 0036831 discloses a method for farming fish of domestic fish species using yangmansu, Patent Publication No. 2005-0123002 discloses fish farming feed using the extract of Ogapi, Patent No. 0585500 A feed additive and a cultured freshwater eel feed comprising the same are disclosed.

The disclosed cultured freshwater eel feed additive consists of a mixture chitosan oligosaccharide derivative obtained by hydrolyzing a mixture of Ganoderma lucidum extract added to chitosan. These additives are relatively expensive and difficult to mass produce.

The present invention is to solve the problems as described above, to provide a method for producing a feed for eel farming and a feed prepared by making the protein of the eel and improve the taste of the fatty meat There is this.

It is another object of the present invention to provide a method for producing a feed for eel farming and a feed produced thereby, which can reduce the fish bottle of the eel being cultured.

Method for producing an eel culture feed according to the present invention for achieving the above object comprises 30 parts by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, 5 to 10 parts by weight of fish oil based on 100 parts by weight of fish meat The primary feed manufacturing step,

0.05 to 0.2 parts by weight of the concentrate obtained by low temperature extraction of green tea leaves with respect to 100 parts by weight of the primary feed, and 0.01 to 0.2 parts by weight of pine powder, and 5 to 15 parts by weight of fig extract based on 100 parts by weight of the green tea concentrate. An additive mixing step of mixing the

A first drying step of drying the feed mixture with 40 to 50% of water mixed with the additives,

Pressing the primary dried feed is characterized in that it comprises a molding step of molding while heating to dry to 100 to 120 degrees.

Eel aquaculture feed according to the present invention for achieving the above object is a primary feed comprising 30 parts by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, 5 parts by weight of fish oil based on 100 parts by weight of fish meat;

0.1 parts by weight of green tea concentrate obtained by low temperature extraction of green tea leaves with respect to 100 parts by weight of the primary feed and 0.1 parts by weight of calendula powder, and 10 parts by weight of fig concentrate based on 100 parts by weight of the green tea concentrate. It is done.

Hereinafter, a preferred embodiment of the present invention relates to a method for preparing an eel cultured feed according to the present invention and an eel farmed feed prepared by the method.

Green tea concentrate added to the eel culture feed according to the present invention was used to extract the green tea leaves using cold water and concentrated it, the pine powder was collected from pine in April and May.

Green tea has the effect of detoxifying heavy metals, and the catechin ingredient in green tea removes radioactive isotopes from the human body before they reach the bone marrow. In particular, green tea is well known to have an effect of inhibiting the absorption of dioxin, known as a highly toxic substance, and promoting the excretion. It is reported that the chlorophyll component binds to dioxin and forms a complex to prevent dioxin absorption of the digestive tract. Green tea also contains a component called saponin, which has a strong surfactant to prevent bacterial growth and water contamination. 0.5g of green tea leaves were added to a sample solution containing 9 heavy metal ions, including cadmium, and left for 30 minutes to measure heavy metals in the filtrate. As a result, cadmium showed 77% lead, 80% copper and 61% adsorption. It is known that the acceleration effect is strong. On the other hand, in an animal experiment in which rats were administered high concentrations of lead and cadmium for three weeks, the green tea drinking group showed 30% weight loss inhibitory effect on lead poisoning and 6% reduction on cadmium poisoning compared to drinking water. Especially in the liver and femur, green tea drinking group showed a significant reduction of lead 40-40% and cadmium 20-40% compared to distilled water drinking group. As such, green tea is found that drinking is inhibiting the intestinal absorption of heavy metals such as dioxins, lead, and cadmium in food.

The pine pollen collected in April and May contains aspartic acid, dreonine, serine, glutamic acid, proline, greenin, alanine, cystine, protein, carbohydrates, calcium, vitamins B1, B2, and E. To increase blood circulation and to protect the stomach, it has been disclosed in herbal wood, herbal grass, etc.

 The method for producing an eel cultured feed using green tea is based on 100 parts by weight of fish meat, including 1 part by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, 10 parts by weight of soybean powder, and 5 to 10 parts by weight of fish oil. Manufacturing step; 0.05 to 0.2 parts by weight of green tea concentrate prepared by low temperature extraction of green tea leaves and 0.01 to 0.2 parts by weight of calendula powder, based on 100 parts by weight of the primary feed, 5 to 15 parts by weight based on 100 parts by weight of the green tea concentrate And an additive mixing step of mixing the fig concentrate.

And a primary drying step of drying the primary feed prepared as described above and the feed mixed with the additive to contain 40 to 50% of moisture, and heating the primary dried feed to 100 to 120 ° C. to dry it. It includes a molding step of molding.

In the first feed manufacturing step, the fish meat is made of flesh and guts of fish, such as mackerel, tuna, sardines, saury, and may include powder such as shrimp, crab.

The wheat flour, wheat flour and soybean powder is preferably steamed using steam of 100 to 120 ℃ and then dried or pulverized or roasted and then ground. The soybean powder may be white or frosted. The seaweed powder was used to dry seaweed, seaweed, seaweed, sea urchin and pulverized it.

And in the additive mixing step, the green tea, that is, green tea concentrate for use as an eel culture additive is mixed with 250g to 300g of the first water tea leaves and then low temperature heat extraction at 80-82 ℃ for about 4 hours. The low temperature heat-extracted primary extract was precipitated and filtered to obtain 400 cc of filtered primary extract. The first extract 400cc was concentrated to 100cc while heating and vacuum packed at 85 ° C. The green tea concentrate thus extracted is stored as a refrigeration and used as an additive in aquaculture feed. The green tea concentrate extraction method is not limited by the above-described embodiment.

It is preferable to include 0.05 to 0.2 parts by weight of the green tea concentrate as described above, when the green tea concentrate is added less than 0.05 parts by weight of the amount is too small to reduce the mortality of the eel expected by the present invention, Conversely, when added in excess of 0.2 parts by weight was confirmed that the growth of eel slow

And in the additive mixing step, the fig extract is washed with a fig after extracting it using a pressurizing device, such as an oil mold, it can be obtained by pasteurization at 50 ℃. Here, the extract may be first dried to contain 50% of the moisture of the fig when the extract is extracted, and then may be extracted using a pressurizing device. Mixing of the green tea concentrate and the fig extract enhances the healing effect of the wound of the eel, and it is preferable to supplement the protein of the eel by mixing the fish oil. Here, the fig extract contains 5 to 15 parts by weight based on 100 parts by weight of green tea concentrate, but when attached to 5 parts by weight or less, it is difficult to expect an immune effect, and when it is contained in 15 parts by weight or more, the growth of eel is slowed. Tended. The fish oil preferably contains 5 to 10 parts by weight based on the weight of the feed.

The molding step is preferably produced in a granular state by pressurizing the feed mixed with additives through a plurality of nozzles of 1 to 3mm.

The feed prepared by the manufacturing method as described above is based on 100 parts by weight of fish meat, the primary feed comprising 30 parts by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, 5 to 10 parts by weight of fish oil,

It contains 0.05 to 0.2 parts by weight of green tea concentrate prepared by low temperature extraction of green tea leaves, 0.01 to 0.2 parts by weight of pine powder, and 5 to 15 parts by weight of fig concentrate based on 100 parts by weight of the green tea concentrate. do. Here, the green tea concentrate is preferably 0.1 parts by weight, 10 parts by weight of fig concentrate, and 5 parts by weight of fish oil.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the present invention is not limited by this embodiment.

Experimental Example 1

The feed according to the present invention prepares a primary feed including 100 parts by weight of fish meat, 30 parts by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, and 5 parts by weight of fish oil,

0.05 parts by weight of green tea concentrate obtained by low temperature extraction of green tea leaves after concentration and 100 parts by weight of the primary feed and 0.01 parts by weight of pine powder, and 5 parts by weight of fig extract were mixed with 100 parts by weight of the green tea concentrate. After the molding for the eel was prepared.

In addition, the first experimental group was prepared by feeding 2,000 weeks of feed prepared in 145 weeks using a circulating filtration breeding facility equipped with a biological filtration tank and a foam separator.

Experimental Example 2

After extracting the green tea leaves to 100 parts by weight of the primary feed in the same manner as described above, 0.1 parts by weight of green tea concentrate, 0.1 parts by weight of calendula powder, 10 parts by weight of fig extract and 100 parts by weight of the green tea concentrate , 5 parts by weight of fish oil was mixed and then prepared for eel feed under molding.

Then, a second experimental group was prepared by feeding a prepared feed to the mounted fish for 145 weeks using a circulating filtration breeding facility equipped with a biological filtration tank and a foam separator.

Experimental Example 3

After extracting the green tea leaves to 100 parts by weight of the primary feed in the same manner as described above, 0.15 parts by weight of green tea concentrate, 0.15 parts by weight of calendula powder, and 15 parts by weight of fig extract based on 100 parts by weight of the green tea concentrate. , 7 parts by weight of fish oil was mixed and then prepared for eel feed under molding.

Then, a third experimental group was prepared by feeding a prepared feed to the mounted fish for 145 weeks using a circulating filtration breeding facility equipped with a biological filtration tank and a foam separator.

Experimental Example 4

After extracting the green tea leaves to 100 parts by weight of the primary feed in the same manner as described above, 0.2 parts by weight of green tea concentrate, 0.2 parts by weight of calendula powder, and 15 parts by weight of fig extract based on 100 parts by weight of the green tea concentrate , 10 parts by weight of fish oil was mixed and then prepared for eel feed under molding.

In addition, a fourth experimental group was prepared by feeding a prepared feed to the mounted fish for 145 weeks using a circulating filtration breeding facility equipped with a biological filtration tank and a foam separator.

 Experimental Example 5

After extracting the green tea leaves to 100 parts by weight of the primary feed in the same manner as described above, 0.25 parts by weight of green tea concentrate and 0.25 parts by weight of pine powder, and 20 parts by weight of fig extract based on 100 parts by weight of the green tea concentrate And, after mixing 15 parts by weight of fish oil to prepare an eel feed under molding.

In addition, the fifth experimental group was prepared by feeding the prepared feed to the mounted fish for 145 weeks using a circulating filtration breeding facility equipped with a biological filtration tank and a foam separator.

Comparative Example

The comparison was carried out using only commercially available eel feed without using the eel feed additive in the same manner as the experimental method of Experimental Example 1. At this time, only the type of feed to feed the eel, the size of the eel farm, the water temperature, the amount of oxygen, the direct light shading and the number of breeding mare was the same in the experimental group and the comparison group.

As described above, after incubating the first to fifth experimental groups and the comparative group, Table 1 was obtained by comparing the growth rate, lung morbidity rate and the degree of fish disease.

In Table 1 below, 200 farmed eel of each experimental group being farmed were randomly weighed and converted into percentages compared with the comparison group. The mortality rate is the percentage of eel that died during 145 weeks in the course of 2,000 abbreviations. The incidence of fish disease is the number of occurrences of fish disease during farming.

Table 1

% Growth % Mortality  Fish disease frequency (number of times) Water pollution 1st experimental group 107  0.54          One   usually 2nd experimental group 110  0.43          One   Good 3rd experiment group 109  0.49          0   Good 4th experimental group 102  0.45          One   usually Fifth Experiment Group 99.2  0.5         One   usually Comparison 100  7.95          3   usually

As can be seen from the experiment, the eel cultured was found to increase the growth rate by 0.2 to 10 or more, compared to the conventional cultivation using the feed, it was found that mortality is relatively low.

When feeding the eel feed mixed with green tea concentrate and calendula powder, mortality rate was hardly generated as much as 0.5% of the present from 7 to 10%, and was less than 0.50% from the eel to the growing season. This is natural death level.

In particular, in order to prevent mixed infection of parasites and aquatic bacteria during the rearing of eel, malachide green is used. Recently, malachide green has been recognized as a carcinogen. However, as described above, when the feed was mixed with green tea concentrate and calendula, it was possible to prevent the mixed infection of parasites and aquatic bacteria, thereby suppressing the use of malachide green.

On the other hand, after the first to the fifth experimental group and the comparative group was cultured, the taste of consumers tasted according to meat quality analysis, eel culture was tested.

<1> meat quality analysis

The following table was obtained by analyzing the meat quality of the first and second experimental groups and the comparative group obtained in Examples 1 and 2 above. In meat analysis, eel was removed from the head, internal organs and bones, and pure muscle tissue was collected and analyzed. The analysis method was water analyzer, crude protein Kjeldahl nitrogen quantitative method (N6.25), crude fat Soxhlet extraction method.

 Item 1st experimental group 2nd experimental group 3rd experiment group 4th experimental group Experimental Group 5 Comparison Moisture content 49.13% 48.34%  47.55% 49.99%  54.5% 50.23% Crude protein 18.77% 19.99%  18.78%  18.34%  15.76% 16.54% Crude lipid 25.99% 26.12%  25.89% 26.55%  26.45% 26.56

As can be seen from the table, the eel meat was found to be relatively superior to the first to fourth experimental groups than the comparison group.

<2> Surveying taste of consumers

100 people randomly harvested eel feeds of the cultured eel according to this experiment were to be tasted like the eel of the comparison group, and Table 2 was obtained.

TABLE 2

 Meat of grilled eel  Grilled incense,  Savory taste Natural flavor 1st experimental group       8      9    9       10 2nd experimental group       10      8    10       15 3rd experiment group       8      9    10       12  4th experimental group       7      9    8       10 Fifth Experiment Group       6      8    6       17 Comparison       6      9    9       8

 The table above shows that 100 people randomly sample grilled salted eel and 10, 30 recognized as good for 60 or more, and 5 to 10 or more recognized as good, and converted it to the boundary. It was.

As can be seen from the above table, it was evaluated that the meat quality of the eel cultured by the feed according to the present invention was hard and the taste of the eel was improved. In particular, more than 60% of the tasters recognized them as wild eel.

As described above, the method of preparing the eel cultured feed according to the present invention and the feed prepared by the method for preparing the eel culture harden the meat to the cultured eel, and the mortality rate of the eel during breeding was significantly reduced. In particular, it was possible to increase the growth rate of eel.

 Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (2)

 With respect to 100 parts by weight of fish meat, the first feed manufacturing step comprising 30 parts by weight of wheat flour or wheat powder, 30 parts by weight of seaweed powder, 5 to 10 parts by weight of fish oil, After extracting the green tea leaves to 100 parts by weight of the primary feed at low temperature, 0.05 to 0.2 parts by weight of the concentrated green tea concentrate and 0.01 to 0.2 parts by weight of calendula powder are mixed, and 5 to 15 parts by weight based on 100 parts by weight of the green tea concentrate. An additive mixing step of mixing the negative fig extract, A first drying step of drying the feed mixture with 40 to 50% of water mixed with the additives, Eel aquaculture feed manufacturing method characterized in that it comprises a molding step of pressing the primary dried feed by heating to 100 to 120 ℃ dried. Primary feed comprising 30 parts by weight of wheat flour or wheat flour, 30 parts by weight of seaweed powder, 5 parts by weight of fish oil, based on 100 parts by weight of fish meat, 0.1 parts by weight of green tea concentrate prepared by low temperature extraction of green tea leaves and 0.1 parts by weight of calendula powder, and 10 parts by weight of fig concentrate based on 100 parts by weight of the green tea concentrate, based on 100 parts by weight of the primary feed. Feed for eel farming.