JP2010246477A - Fish farming feed mixture, method for producing the same, and saltwater fish feed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fish farming feed mixture and the like using bamboo and suitable for practical use as a sample additive of saltwater fish. <P>SOLUTION: A method for producing the fish farming feed mixture includes: a step of obtaining bamboo powder by pulverizing bamboo, a step of drying the bamboo powder, and a step of adding fermentative bacteria to the dried bamboo powder to ferment the powder. Since the bamboo powder thus obtained by crushing not bamboo grass but bamboo is used, a supply amount is secured, and at the same time, sterilizing power is suppressed so as to add fermentative bacteria such as lactic acid bacteria, and it is possible to demonstrate favorable characteristics as the fish farming feed mixture, such as an intestinal function regulating action. The average particle diameter of the bamboo powder is preferably 40-500 μm, and the moisture percentage of the bamboo powder is preferably 30-50%. As fermentative bacteria, lactic acid bacteria or bifidobacteria are suitably used. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fish feed mixture to be added to a feed for saltwater fish, a method for producing the same, and a saltwater fish feed.

  In Japan, various seafood are cultivated on the sea and inland waters. Inland aquaculture is completely mixed feed, but sea surface aquaculture is progressing considerably, but anchovy, small mackerel, small horse mackerel, squid and other fish are still distributed as raw feed. Many aquaculture farms are mixed with powdered mixed feed and formed into pellets for feeding. In recent years, the catch of sardines that have supported Japan's marine aquaculture industry using fish meal and fish oil that have been caught in large quantities in the nearby seas has drastically decreased in recent years. Due to the lack of live aquaculture feed itself and the domestic production of fish meal and fish oil, which are indispensable for blended feeds, the majority of fish meal and fish oil, which are the main ingredients of blended feed for sea surface farming, are mostly Peru and Although it has become dependent on imported goods from South America such as Chile, this supply is not without fear. In addition, soybeans, corn, wheat, etc. are also used in the formula feed. In Japan, most of these ingredients depend on imports from other countries such as the United States. In recent years, the cultivation of seafood has become increasingly popular in other countries such as Northern Europe, China, Southeast Asia, and North America, and with this, fish meal and fish oil, which are the main ingredients of aquaculture feed, have been tightened worldwide, and the price has soared is doing. Furthermore, in Japan, the fish price and consumption of cultured seafood are significantly sluggish due to the long-term recession, making the management of the aquaculture traders very difficult. Since the aquaculture industry is an economic activity, its feed is required to have high economic efficiency in addition to the basic performance represented by feed efficiency.

  The cost of cultured fish and shellfish feed will increase further in the future due to the global tightness of its main ingredients, so even if the price can be raised, it cannot be expected to lower the price. With this, the aquaculture industry is in a situation where it can be said that it is a triple pain. Farmers are eager to develop feed additives that maximize the performance of blended feed or feed that exhibits higher productivity at a lower cost than ever before.

In view of such circumstances, there are research examples of administration effects on cultured seafood focusing on the fact that most of the residue after extracting the extract of sasa is wasted (Patent Document 1 and Non-Patent Document 1) ). This technique is intended to make effective use of Sasa extract extract residue, and it has been reported that the extract extract residue of Chishimasa and Kumazasa is effective as a feed for freshwater fish such as rainbow trout and sweetfish.
JP 2007-159540 A JP-A-2005-341844 "Useful! Fisheries Technology" Autumn 2007 Vol.412, 2-4

  Although the above research has achieved certain results for freshwater fish, it is difficult to use as feed for saltwater fish that is required in large quantities. In particular, Sasa is unsuitable for mass production because the amount that can be collected is absolutely small. Moreover, although the said patent document 1 has mention about bamboo, the concrete utilization method and research result are not reported at all. Furthermore, according to the test conducted by the present inventor, Kumasasa is only fiber, has no nutritional value, and has extremely strong bactericidal power, so it cannot be fermented or cultured as a microorganism.

  On the other hand, not only the effect of reducing fish meal feed, but also a function in terms of modification such as resistance to diseases is required for feed additives. Especially in the aquaculture industry, the death of cultured fish due to fish disease often causes fatal damage. Further, Patent Document 2 discloses a feed that can be favorably eaten by birds such as small birds fermented with lactic acid from crushed bamboo, but research on applying lactic acid fermentation to seafood, particularly seawater fish, has not yet been made. Not.

  On the other hand, in conventional fish feed, administration of drugs such as antibiotics has been attempted to improve the intestinal environment of the fish body. In particular, antibiotics have been used to prevent outbreaks of diseases with high mortality, a major problem in the aquaculture industry. However, the use of antibiotics is regarded as a problem in terms of food safety. In addition, there is a possibility that antibiotics may kill the intestinal bacteria of the fish body, and in recent years, there is a tendency to refrain from using them from the viewpoint of excessive reliance on antibiotics. From such a point of view, there is a need for a seawater fish feed and its additive that does not use antibiotics or other artificial drugs and that has improved safety by using natural materials.

  The present invention has been made to solve such problems. A main object of the present invention is to provide a mixture for fish feed using bamboo, a method for producing the same, and a saltwater fish feed that are suitable for practical use as a sample additive for seawater fish.

  In order to achieve the above object, the fish feed mixture of the present invention is a fish feed mixture to be added to a saltwater fish feed feed, in which fermented bacteria are immersed in bamboo powder obtained by pulverizing bamboo. ing. As a result, the growth rate and survival rate of the cultured fish can be improved, the morbidity rate can be reduced, and the growth feed can be reduced more than necessary, thereby reducing the feed cost of the farmer. In addition, the fiber of bamboo powder has the effect of promoting extracorporeal discharge of extra fat that is not absorbed in the intestines of seawater fish. In particular, according to the test results conducted by the present inventor, bamboo powder is strong and difficult to decompose in the gastrointestinal tract, and as a result of staying in the intestine, more fermenting bacteria are decomposed and absorbed by the intestinal bacteria, This activity is activated and the absorption efficiency of the administered feed is improved, whereby the dose of the feed can be suppressed.

  In addition, a method for producing a fish feed mixture for adding to a feed for seawater fish includes a step of obtaining bamboo powder obtained by pulverizing bamboo, a step of drying the bamboo powder, and a fermented and cultured lactic acid bacterium. Dipping in the dried bamboo powder, fixing, and maturing. In this way, by using bamboo powder crushed bamboo instead of Sasa, supply amount can be secured, and in addition, fermenting bacteria such as lactic acid bacteria can be added while suppressing bactericidal power, and for fish farming feed such as intestinal regulation It became possible to exhibit preferable characteristics as a mixture.

  It is preferable to add a residue of rice grains or beans to the bamboo flour. The average particle size of the bamboo powder is preferably 10 μm to 500 μm. Furthermore, the moisture content of the bamboo powder is preferably 3 to 30%. Furthermore, the fermenting bacteria are preferably lactic acid bacteria or bifidobacteria. In addition, by making the bamboo powder porous, the surface area of the bamboo powder can be increased, and an effect of fixing and maturing more fermenting bacteria can be obtained. Moreover, by using such a mixture for fish feed as a seawater fish feed mixed with fish meal, a probiotic aquaculture feed utilizing bamboo powder can be realized.

  According to the present invention, in the trial calculation performed by the present inventor, it is possible to expect an improvement in feed efficiency of 18% or more compared with the current aquaculture feed, and the cost of the aquaculture feed is reduced. Moreover, the improvement in immunity by improving the intestinal environment of saltwater fish lowers the production cost compared to conventional aquaculture feed and improves the profitability of aquaculture fishermen. In particular, there is an advantage that it is possible to use bamboo materials that are extremely easy to obtain and inexpensive, and moreover, it is possible to effectively utilize surplus bamboo materials.

  In addition, as an indirect effect, there is a public benefit aspect that can be used for the maintenance and management of bamboo forests in the abandoned mountain forest, which is currently a problem, by expanding the usage of bamboo materials. Currently, the social problem facing the mountain forest region is the decline of Japanese firewood production due to the import of cheap firewood overseas such as China. As a result, domestic production is decreasing, and the vicious circle of succession is decreasing and the deforestation of bamboo forests is becoming a social problem. Bamboo, in particular, becomes mature in just three years and is a rhizome plant, which causes other forest plants to decline, causing forest degradation.

In contrast, in the present invention, since a large amount of bamboo is used as a host for probiotic lactic acid bacteria, it can contribute to the financial resources of straw farmers. Bamboo farmers who ship bamboo are thinning the necessary bamboo forests in order to collect good quality bamboo. By converting the unnecessary bamboo produced at this time into bamboo powder, cost competitiveness can be enhanced by using various bamboo forest management resources. Furthermore, it will be possible to use it for the maintenance and maintenance of the abandoned bamboo forest, which will promote the forest maintenance. Further and waste reduction and CO ₂ reduction by waste bamboo use, also great advantage in environmental. For example, 2,000 t / year of bamboo is consumed as raw material in the Anan area of Tokushima Prefecture. If the cost of bamboo is 4,000 yen / 160 kg, 2,000,000 kg / 160 kg × 4,000 yen = An increase in income of 50 million yen / year can be expected.

  In this way, from the viewpoint of expanding the use of bamboo, it is an invention of great social significance that not only helps aquaculture farmers by reducing the cost of aquaculture feed, but also helps stop the devastation of forests. It becomes.

  Embodiments of the present invention will be described below. However, the embodiment shown below exemplifies a mixture for fish feed for embodying the technical idea of the present invention, a method for producing the same, and a saltwater fish feed, and the present invention is a mixture for fish feed and its The production method and saltwater fish feed are not specified as follows. Moreover, this specification does not specify the items shown in the claims as items of the embodiment. In particular, the amount, size, material, shape, relative arrangement, and the like of the items described in the embodiments are not intended to limit the scope of the present invention only to a specific description unless otherwise specified. It is just an example. In addition, the contents described in some examples and embodiments may be used in other examples and embodiments.

  In the present invention, all bamboos belonging to the bamboo family can be used for the bamboo. Based on a simple search table for bamboo and Sasa species described in Junzo Uchimura's book of bamboo and bamboo shoots (published by Somori Co., Ltd., 2005), bamboo subfamily plants include the genus Mushroom, Narihirada, and Tochiku. The genus includes the genus, Shihochiku, Okamezasa, Sasa, Azumazasa, Yadake, Suzuda, Medaka, Kanchiku, Machiku, Horaichiku, and Shichiku, and the Sasa species include Sasa, Azumasasa, Suzuda Genus genus, genus medusa and genus Kanchiku, and genus medaka includes ryukyukiku, medake and nesa. In addition, bamboo can be used that includes not only the grown parent bamboo but also young bamboo and husk.

  In particular, by using bamboo instead of sasa, there is an advantage that a large amount of bamboo powder can be easily produced. Sasa is relatively easy to obtain a powder by pulverization, but has a disadvantage that the amount obtained is small. On the other hand, bamboo grows quickly and is easily available. On the other hand, it is not easily pulverized as compared with Sasa, and it is particularly difficult to obtain a small average particle size uniformly, and it is extremely difficult to obtain a large amount of fine powder. This is because, when bamboo grass is dried, it can be easily crushed, but bamboo is elastic even when dried, so it tends to expand and contract when it exceeds a certain size, and deforms against applied stress. This is considered to be because the strength becomes stronger and it becomes difficult to exert the action of crushing.

  Saltwater fish includes cultured fish such as yellowtail, red sea bream, amberjack, flounder, sea bass, sea bass, horse mackerel, mackerel, etc., but farmed crustaceans such as prawns, shellfish such as abalone, ornamental seafood, etc. The present invention can also be used appropriately for animals fed with feed and managed.

In addition, the feed for seawater fish farming to which a mixture for fish feed is added is prepared using a solid feed such as dry pellets, a crumbled feed obtained by crushing and sieving the pellets and sieving, and a device such as a high-speed agitation granulator. Granulated feed that has been granulated, feed that is simply mixed and pulverized with raw materials, mixed with water and kneaded to feed, moist pellets that are fed by mixing, crushing and shaping raw feed and powdered feed, and the moist Mix-type solid feed that is mixed and used at the time of pellet production, single moist pellets that are used after molding by adding water only to powdered feed, rotifers and artemia that are cultured in seedling production and fed to juveniles, etc. Forage feed, paste-like feed that uses a large amount of raw materials, and feed such as small catch fish such as sardines and horse mackerel that are used alone as raw feed.
(Method for producing a mixture for fish feed)

A method for producing a mixture for fish feed according to the present invention will be described with reference to FIG. First, bamboo powder obtained by pulverizing bamboo in step S1 is obtained. Bamboo can be used in a wet state, but after drying with a freeze dryer or paddle type rotary dryer, etc., it is crushed with a hammer mill, vertical mill, bin mill, etc. and used as a dry powder product for transportation or Convenient for storage. In addition, about the manufacturing method of bamboo powder, the technique of patent 3696535 can also be utilized, for example.
(Average particle size of bamboo powder)

  The average particle size of the bamboo powder is preferably 10 μm to 500 μm. According to the test conducted by the applicant of the present application, when the average particle size is too large, it becomes difficult for seawater fish to eat, and conversely, when the particle size is too small, it adheres to the gills of the saltwater fish that breathe, Ella was found to interfere with breathing. As a result of the test, when the cultured fish prey when the particle size is 10 μm or less, the risk of adhering to the gills and causing respiratory disturbance increases. On the other hand, it has been found that the degree of fixation is good in the particle size range of 100 μm to 500 μm from the viewpoint of fixing and maturation of lactic acid bacteria to bamboo powder. From the above results, the preferable average particle size of bamboo powder is 10 μm to 500 μm, more preferably 40 μm to 200 μm, still more preferably about 50 μm to 100 μm, and most preferably about 50 μm.

  Furthermore, the bamboo powder is preferably porous. Porous bamboo powder has an increased surface area, so that more fermenting bacteria can be established and matured. Since bamboo is inherently fibrous and porous, it is pulverized by crushing bamboo without impairing these properties. FIG. 2 shows an image of a micrograph showing the porosity of bamboo powder, and FIG. 3 shows an image of a micrograph of bamboo fiber. In FIG. 2, the acceleration voltage is 15 kV, the enlargement ratio is 250 times (reference unit 1.00 μm), and in FIG. 3, the enlargement ratio is × 250 times. Thus, it can confirm that the bamboo powder which concerns on an Example is porous after grinding | pulverization. As a result, the surface area can be increased, and a large amount of lactic acid bacteria can be established and matured as a host of lactic acid bacteria.

  In addition, it is preferable to use raw wood for bamboo, but a residue obtained by extracting an extract can also be used. As a method for obtaining the residue, various production methods such as a method using water, hot water or hot water, a method using a solvent such as alcohol, a method of squeezing by pressurization, or a method combining these methods can be used. In particular, the remaining extraction residue obtained by using fresh bamboo just collected as a raw material and extracting it with a high-pressure / low-temperature method is preferable in that the active ingredient is extremely inactivated.

  Next, in step S2, the bamboo powder thus obtained is dried. Such miscellaneous bacteria can be once sterilized by the drying step as the amount of water in which the fermented bacteria already present in the bamboo powder cannot live. Accordingly, the drying time and drying temperature are appropriately set according to the amount of bamboo powder used, the moisture content of the bamboo powder, the humidity, and the like. Drying can be heat drying as well as natural drying. The moisture content of the bamboo powder after drying depends on the dried state of the bamboo powder, the environmental temperature, the humidity, etc., but is preferably 3 to 30%, more preferably 5 to 20%, and most preferably 8%.

  On the other hand, in step S3, the fermenting bacteria are fermented and cultured. As fermentative bacteria, lactic acid bacteria, bifidobacteria, and yeasts can be used. Examples of lactic acid bacteria include Lactococcus lactis subsp. Lactis, Streptococcus diacetilactis, Leuconostoc cremoris, Lactobacillus plantarum (Lactobacillus plantarum) And Lactobacillus casei subsp. Casei can be used as appropriate. As the yeast, Saccharomyces florentinus and the like can be used as appropriate. Examples of lactic acid bacteria that have particularly good effects on intestinal bacteria of fish include Lactobacillus, Lactococcus, Streptococcus, Pediococcus and the like. In the present embodiment, the genus Lactobacillus was selected with reference to the numerical values described in the paper on the infection prevention test of Nagasaki General Fisheries Experiment Station: Lactobacillus-added feed-treated yellowtail (1998, responsible Suzuki).

  In order to ferment lactic acid bacteria, the water content is adjusted to an appropriate amount for lactic acid fermentation as needed in anaerobic conditions and left for a predetermined time. Fermentation can be naturally fermented at a constant temperature, or enzyme fermentation by adding a fermentation accelerator such as complex lactic acid bacteria, rice bran, or other carbohydrates. For example, when adding 25 g of lactic acid bacteria to 500 ml of bamboo powder, it is left at 25 ° C. to 30 ° C. for about 2 days. During this time, treatments such as stirring and heating may be added as necessary. Since lactic acid produced by lactic acid bacteria suppresses the growth of other harmful microorganisms, only lactic acid bacteria proliferate and undergo lactic acid fermentation during fermentation. When fermented, the fermenting bacteria germinate mycelium to become budding bacteria and form colonies.

  Moreover, the residue of rice grains or beans can also be added to bamboo flour. Examples of rice cereal residues include rice bran, bran, and soy waste produced during milling, milling (rice polishing), and wheat. . Furthermore, squeezed scum generated at the time of squeezing sesame, rapeseed, soybean, flaxseed, etc., soy bean can be suitably used. These may be used alone or in combination with a plurality of bamboo flour. By adding these food residues to bamboo flour, mixing them, and fermenting them, it is possible to obtain a mixture for fish feed that further enhances the intestinal action and the like.

  In addition, since the process of step S3 is performed separately from the grinding | pulverization and drying process of a bamboo, an order is not ask | required between step S1 and S2. For example, it goes without saying that it can be performed in parallel with steps S1 and S2, or after or in advance of steps S1 and S2.

  Further, in step S4, the obtained fermentative bacteria are immersed in the dried bamboo powder and are allowed to land. If the fungus is added directly to the dried bamboo powder, fermentation becomes difficult due to the sterilizing power of the bamboo powder. Therefore, it is preferable that the fungus is previously fermented and then brought into contact with the bamboo powder to be impregnated and fixed. Sasa has a strong sterilizing power, but bamboo powder contains woody material other than the fiber, so that the sterilizing power is somewhat suppressed and fermenting bacteria such as lactic acid bacteria can be implanted. In particular, porous bamboo powder is preferable because the fermenting bacteria can easily impregnate the porous interior.

  Finally, in step S5, this is dried to obtain a fish feed mixture. As described above, probiotics, that is, a mixture for fish feed that contains microorganisms that contribute to the balance of the intestinal microflora, is obtained as a mixture for fish feed, including fermenting bacteria, intestinal regulation, etc. Can be demonstrated.

  The mixture for fish feed obtained in this way is used by adding to or mixing with existing seafood fish feed. For this reason, the mixture for fish feed is not limited to a powder form, and can be supplied in various forms suitable for its usage, such as a granular form, a liquid form, a paste form, and a pellet form. The ratio of adding the fish feed mixture to the feed is set optimally with reference to the basic rate of addition to the feed and the addition rate of the additive to the feed and the feed rate of the feed It should be. Depending on the purpose and usage, other useful ingredients such as vitamins, minerals, krill extract, binders, preservatives, pigments, polyphenols, strong liver, immunostimulants, etc. For the purpose of increasing the amount, rice bran oil cake, wheat flour or the like can be optionally blended.

  Such bamboo powder includes nutritional values such as carbohydrates, proteins, amino acids and the like, and can add functions such as intestinal regulation by lactic acid bacteria, and can be expected to improve the intestinal environment of saltwater fish. Moreover, the supply quantity which can respond to a large amount of demand can be ensured by using the bamboo powder which pulverized bamboo instead of Sasa. In addition, because it is inexpensive and easily available, it can be expected to reduce feed such as fish meal. In addition, the modifying effect of improving the resistance to fish disease and reducing the morbidity can be obtained by the intestinal action by lactic acid bacteria.

  In particular, aquaculture fish feed currently used is generally a feed in which vitamins, nutrients, antibiotics, and the like are mixed with a high protein, high fat feed. However, in such aquaculture fish feed, excess high protein and high fat adhere to the intestine and inhibit the action of intestinal bacteria in the fish body. As a result, the intestinal environment of the fish deteriorates and the feed efficiency deteriorates. Currently, more than the necessary amount of feed is administered and consumed. In recent years, fish farming has been flourishing in other countries such as China, and the cost of aquaculture feed has increased and feed costs have increased. From these backgrounds, improvement of feed efficiency and cost reduction of cultured fish feed are required.

  On the other hand, this invention can implement | achieve the outstanding feature that feed efficiency can be improved with the mixture for fish feed using cheap bamboo material. Intestinal bacteria in the fish body by using a mixture of probiotic lactic acid bacteria feed that uses bamboo, which is a natural material, not a drug for the population. As a result of promoting the digestive action of fish by promoting the intestinal action of fish such as immunity and improving the digestion and absorption of various nutrients of feed, the absolute amount of feed to be administered can be reduced. , Leading to reduced feed costs. Furthermore, by eliminating drugs such as antibiotics, it can contribute to improving the safety and quality of cultured fish as food.

  Next, the results of a test for breeding saltwater fish by adding a mixture for fish feed mixed with bamboo powder and lactic acid bacteria to the sample are shown in the graphs of Table 1 and FIG. In this test, 12 1-year-old cultured yellowtails were divided into two groups as one group, and (comparative example) mixed fish meal feed as a sample, (Example 1) 1% fish culture feed mixture in the same mixed sample Added and fed to each group and allowed to grow for 26 days in ginger. This result was averaged based on the amount of food intake per day, change in body weight, and growth rate per day based on a sample of 1 g per animal, and the results are shown in FIGS. 4 (a) to 4 (a). Shown in As is apparent from this result, the hamachi which gave the sample to which the mixture for fish feed according to Example 1 was added gained weight and grew efficiently despite suppressing the intake of food. I was able to confirm. This proved the effectiveness of the mixture for fish feed using a combination of bamboo powder and lactic acid bacteria.

  The lactic acid bacteria used in the mixture for fish feed are bacteria for lactic acid bacteria beverages and are considered to be different from the intestinal bacteria of fish, but the results confirmed that fish feed efficiency was improved. Specifically, the pulverized bamboo powder having a particle size of 0.5 mm is sterilized while lactic acid bacteria belonging to the genus Lactobacillus are cultured. Then, the sterilized bamboo powder is immersed in the cultured Lactobacillus genus liquid for 24 hours. Then take out the bamboo powder and transfer it to a sealed container. The sealed container is maintained at a temperature of 35 to 40 ° C. for 3 days to fix and mature lactic acid bacteria on the bamboo powder. Determination of fixing and maturity is performed by PH measurement. Here, when PH became 3.5-4.0, it judged that sufficient maturation was made and calculated the number of establishment. The number of lactic acid bacteria is immersed in an aqueous solution and the number of bacteria is calculated with a microscope. Here, an optical micrograph before fixation of lactic acid bacteria and a microphotograph after fixation of lactic acid bacteria are shown in FIGS. 5 and 6, respectively. Here, a Leica microscope DMIL was used as the optical microscope, and the observation magnification was 400 times. Thereafter, the mixture was further dried and sealed to obtain a fish feed mixture. The obtained bamboo powder can be stored, transported, etc. by keeping the water content at 10% or less.

  In this state, the bamboo powder was dried and mixed with feed as a mixture for fish feed. The feed used was fish meal manufactured by Nippon Compound Feed Co., Ltd., and a feed administration test was conducted from November 30 to December 26, 2007 at the Central Research Institute Marine Development Center (816, Wakimoto, Ainan-cho, Minamiuwa-gun, Ehime Prefecture). . The administration conditions were bamboo powder particle size of 500 μm, lactic acid bacteria were Lactobacillus casei (cultured at 35 ° C. for 2 days and nights in a sealed incubator), dried to a moisture content of 8%, and then mixed into the mixed feed (feed 0.5 wt%). The target fish was 12 yellow-breasted fish, and the administration period was 28 days or more, and it was administered to fry having an average weight of about 800 g. As a result, the average body weight increased by 7.0 g in 28 days, and the feed efficiency was improved from 38.8% to 43.5%, compared with those not administered with the feed mixture. In this way, it was confirmed that the lactic acid-fermented bamboo powder was effective as a mixture of blended feed.

  The mixture for fish feed of the present invention can be suitably used as an additive for saltwater fish feed for addition to saltwater fish feed.

It is a flowchart which shows the manufacturing method of the mixture for fish feed based on one embodiment of this invention. It is an image figure of the microscope picture which shows the porosity of bamboo powder. It is an image figure of the micrograph of bamboo fiber. It is a graph which shows the result of adding the mixture for fish feed of Example 1 to a sample, and performing the breeding test of saltwater fish. It is an image figure which shows the optical microscope photograph before lactic acid bacteria fixation. It is an image figure which shows the optical microscope photograph after lactic acid bacteria fixation.

Claims (8)

A fish feed mixture for addition to saltwater fish feed,
A mixture for fish feed characterized by immersing fermentative bacteria in bamboo powder crushed bamboo. The mixture for fish feed according to claim 1, wherein a residue of rice grains or beans is further added to bamboo flour. A fish feed mixture according to claim 1 or 2,
An average particle size of the bamboo powder is 10 μm to 500 μm. It is a mixture for fish feed according to any one of claims 1 to 3,
A mixture for fish feed, wherein the bamboo powder has a moisture content of 3 to 30%. It is a mixture for fish feed according to any one of claims 1 to 4,
A mixture for fish feed, wherein the fermenting bacteria are lactic acid bacteria or bifidobacteria. A fish feed mixture according to any one of claims 1 to 5,
A mixture for fish feed, wherein the bamboo powder is porous.   A saltwater fish feed obtained by mixing the fish feed mixture according to any one of claims 1 to 6 with fish meal. A method for producing a fish feed mixture for addition to saltwater fish feed,
A process of obtaining bamboo powder obtained by pulverizing bamboo;
Drying the bamboo powder;
Immersing the fermented and cultured lactic acid bacteria in the dried bamboo flour, fixing, and maturing;
The manufacturing method of the mixture for fish farm feed characterized by including this.