JP3771570B1 - Livestock barn and excrement disposal method in barn - Google Patents

Abstract

【Task】
Livestock is raised on a fermentation bed in which livestock excretion is decomposed and fermented by microorganisms, odor problems and the like generated from feces and urine are solved, and livestock with good meat quality is produced at a low cost. To provide a livestock barn that does not require a septic tank and a waste disposal method in the barn.
[Solution]
A concave groove is formed in the central portion of the site, and a fermentation bed for laying a bedding is formed in the concave groove, and a plurality of partition rooms having a space for one livestock are provided on both sides of the fermentation bed. By providing a barn characterized by being arranged, the above-mentioned problems could be achieved.
[Selection] Figure 1

Description

The present invention relates to a livestock barn bred in a barn such as pigs and cows and a method for excrement disposal in the barn. Specifically, the livestock is raised on a fermentation bed in which livestock in the barn is excreted in the litter, which is decomposed and fermented by microorganisms to solve odor problems and the like generated from the excrement, etc. The present invention relates to a barn and a method for treating excreta in a barn, capable of breeding and producing livestock with good meat quality.

In the conventional barn, livestock breeding places are provided on a floor with a slope, and excreted excreta is discharged naturally into the sewage tank outside the barn together with a large amount of washing water discharged, The discharged sludge wastewater mixed with manure is treated by flowing into a public sewerage facility, river, ocean, etc. after purification treatment in a sewage tank.

However, the above floor surface becomes an unstable surface inclined due to the formation of a water gradient and is always overhumid with manure and cleaning water at the time of cleaning, which is a problem as a breeding environment that impairs the health of livestock and harms hygiene, Moreover, there is a problem that the waste water stored in the manure in the barn and the sewage tank emits a bad odor to the surroundings by anaerobic fermentation or the like. Furthermore, when wastewater is passed to public facilities, etc., it is necessary to carry out purification treatment that meets the wastewater environmental standards, which requires a large purification plant, a large amount of chemicals, or a large amount of water, which requires significant treatment costs, This hinders the sound development of the industry.

Moreover, in the livestock industry such as pigs and cattle, excreta treatment excreted by livestock is the most important issue. Conventionally, the excrement etc. are fermented to solve compost and fertilizer manufacturing technology and odor problems. Many proposals have been made on methods and the like.

Regarding the manufacturing technology of compost and fertilizer, for example, Japanese Patent Application Laid-Open No. 2004-244305 “Compost Manufacturing or Manure Processing Method, Apparatus and Compost” solidifies or converts pig manure, human manure, etc. by reaction of wollastonite and sulfuric acid. It is characterized by granulating, and JP 2003-226590 “Manufacturing method of livestock manure compost” is a primary fermentation step of fermenting livestock feces after adjusting the water content and livestock manure obtained by fermenting in the primary fermentation step A vegetable waste fermentation process for mixing and fermenting crushed and dried vegetable waste to a part of the raw material, a secondary fermentation process for further fermenting the remaining animal manure raw material after the first fermentation process, It has the 3rd fermentation process which mixes and ferments the vegetable waste raw material which passed through the said vegetable waste fermentation process with the livestock dung raw material which passed through the secondary fermentation process, It is characterized by the above-mentioned.

Furthermore, as a method for solving the odor problem, there is, for example, Japanese Patent Application Laid-Open No. 2001-259008, which supplies ammonia odor generated during composting of livestock manure to the deodorization tower and makes it contact with the activated sludge liquid in the deodorization tower. Therefore, the ammonia nitrogen content is converted into nitrous acid and nitrate nitrogen by the action of the sludge, and the activated sludge liquid after deodorization treatment is returned to the batch activated sludge wastewater treatment facility for denitrification treatment. It is said.
JP 2004-244305 A JP 2003-226590 A JP 2001-259008 A

However, there are some problems with the above-described conventional technology, and Patent Document 1 requires a lot of labor, special mechanical equipment, electric power equipment, chemicals, etc. for the transfer, mixing, and carrying out of manure and maintenance. The running cost is high.

Moreover, since patent document 2 passes through the fermentation process from primary to tertiary in addition to the excretion of manure, carrying out and the like, and adjusting the moisture of manure, crushing and drying of vegetable scraps, and the primary to tertiary, it takes a long time until commercialization, Similar to Patent Document 1, it is necessary to make a large investment in mechanical equipment, power equipment, etc., and since regular maintenance is required, the cost is high, and it is considered that the profitability is not suitable for livestock management. .

Patent Document 3 as a solution to the odor problem requires a large site for deodorizing towers, sludge wastewater treatment facilities, and transportation devices, as well as mechanical equipment, power equipment, chemicals, etc. as in the above-described conventional example. This is not the best way to solve the odor problem.

The present invention solves the above-described problems in the prior art, and is generated from excrement etc. by raising livestock on a fermentation bed in which livestock in a barn is excreted in bedding by decomposing and fermenting with microorganisms. To provide a livestock barn and excrement disposal methods in the barn that can develop healthy livestock industry at low cost, enable healthy livestock breeding and meat quality production at low cost. The purpose is that.

Means for solving the problems are the claims of the claims, and specifically, the invention shown below, which will be described in detail. Here, the following explanation will be made in order to eliminate the doubt on the interpretation of terms used in the present application (particularly, the claims, the description, etc.). <Explanation of Terms> ○ Livestock barn is also called livestock barn and refers to a building that keeps livestock. When the livestock is a pig, it is called a piggery. When the livestock is a cattle, it is called a barn. ○ Site refers to land for building a barn. O A concave groove means a concave groove for forming a fermentation bed built in the center of a livestock barn site. Generally, it is straight and is formed by placing concrete. ○ Bedding refers to rice husks, large sawdust, rice bran containing live fungi (and livestock excrement), etc., placed at the feet of livestock when keeping livestock in a barn. ○ Fermentation is a process in which microorganisms such as yeast and bacteria decompose organic compounds to obtain energy to produce alcohols, organic acids, carbon dioxide, and the like. In a narrow sense, it refers to a process in which microorganisms obtain energy by decomposing sugars in the absence of oxygen. It has been used since ancient times for the production of sake, miso, soy sauce and cheese. ○ Fermentation bed is for livestock breeding consisting of bedding and fermenting microorganisms used in the breeding system that allows livestock breeding and manure treatment to be completed in the livestock house at the same time by mixing and fermenting manure with the bedding laid in the livestock house on the spot The floor. ○ Adult livestock means grown livestock. In particular, the present invention is intended for adult livestock to deliver. Techniques for the successful delivery of adult livestock are essential and very important for the livestock industry. The opposite concept for adults is offspring. In the present invention, the partition room refers to a room in which livestock is separated and separated from other livestock. ○ A passage means a passage through which a person passes for other work in order to feed livestock feed to a feed box. The passage side of the partition chamber means the opposite side of the side facing the concave groove. It is desirable that a feeding area is placed on the passage side of the partition chamber and that the livestock is excreted on the opposite side, and the manure falls naturally into the concave groove. ○ A bait box is a container that contains livestock food. In the superordinate concept, it is also called a feeding area. A feeding area is a place where livestock is fed. ○ A pool-like fermentation bed refers to various types of pool-like fermentation beds in which a litter is laid in a substantially flat shape. In particular, the pool-like fermented bed is used to keep kittens free, the kittens do not have any stress, the excreta excreted every day is treated with live bacteria, and the breeding heat improves the breeding environment, Its growth is going well without being affected by the disease. ○ An enclosure frame refers to a frame erected so as to surround the pool-like fermentation bed. ○ Viable bacteria are literally living bacteria. Usually, live bacteria having a certain effect are called live bacteria agents. In livestock, the effects of viable bacteria have been reported to prevent diarrhea in newborns, promote growth, or improve the balance of intestinal flora, and are fed to livestock in Japan and other countries. There are many types of viable bacteria added, and they are commercially available as simple or mixed preparations. ○ Natto bacteria refers to thermophilic and aerobic candy bacteria used in natto production. It is a kind of Bacillus subtilis. ○ A septic tank is a device that purifies livestock manure, etc. by biological treatment. ○ The Livestock Excretion Act (Act on the Optimization of the Management of Livestock Excretion and Promotion of Use) is a law enacted in 1999 for the purpose of proper management of livestock excrement and effective use as a resource. Under the Livestock Exclusion Act, livestock producers must properly manage livestock excrement in accordance with the “management standards” established by the national government. Among the “Management Standards”, methods such as inspection and maintenance of processing facilities have already been in effect since November 1999, and records such as the amount generated and treatment methods have been in effect since November 2002. In addition, from November 2004, standards related to the structural equipment of treatment facilities will be applied. Under this standard, solid waste disposal facilities such as livestock excrement shall be constructed with impermeable materials and appropriate covers and sidewalls, and liquid livestock excrement treatment facilities shall also be impervious materials. It is supposed to be a built-in storage tank. Therefore, when this law came into effect from November 2004, livestock farmers had to install composting facilities for manure treatment and septic tanks for urine treatment. As the current “excrement disposal method in a barn” known by the inventor, for example, a concave groove is formed in the central portion of the site, and the manure fallen into the concave groove is collected in one of the concave grooves by a scraper. Then, the manure was separated, the solid content was sent to a compost tank to be composted, and the liquid content was sent to a septic tank for purification treatment in the barn. However, if a septic tank is installed, the construction cost will not be stupid, and small livestock farmers will not be able to continue the livestock industry. -------------------------------------- The first invention is the center in the premises A concave groove is formed in the groove, and a fermentation bed for laying a litter made of rice husk, large sawdust, rice bran containing a biocide and livestock excrement is formed in the concave groove. A plurality of compartments having a space for one livestock are provided. The concave groove is generally linear and is formed by casting concrete. The characteristic constituent feature of the present invention is “to form a fermentation bed for laying a litter made of rice husk, large sawdust, rice cake containing a biocide and livestock excrement in the concave groove”. By using the concave groove as a fermentation bed, a scraper for collecting the manure falling into the concave groove in one of the concave grooves is not required, and the compost for separating the manure and making the solid content compost This eliminates the need for a septic tank to purify the liquid component, thus achieving a significant cost reduction.

The second invention is characterized in that in the barn according to the first invention, a food box is disposed on the side of the passage opposite to the side facing the concave groove.

The third invention is the barn according to the first and second inventions, characterized in that a concrete flat bottom pool-like fermentation bed for laying a laying material is formed on the ground which has been flattened in the site. .

4th invention is the barn of 1st to 3rd invention, Comprising: The shape of the said pool-like fermentation bed is a planar view, the shape in any one of a rectangle, a square, a circle, a triangle, a polygon, or an ellipse And an enclosure frame is erected so as to surround the pool-like fermentation bed.

5th invention is the barn as described in 1st-4th invention, Comprising: The several food box was arrange | positioned in the outer side or the inner side of the said enclosure frame, It is characterized by the above-mentioned.

6th invention is the excrement disposal method in the barn as described in 1st-4th invention, Comprising: The litter preparation process which creates the litter which consists of a rice husk, large sawdust, the rice bran containing a biocide, and livestock excrement And a fermenting process for introducing and fermenting a bedding into the fermentation bed, a breeding process for directly or indirectly raising livestock on the fermented bed, and a livestock raised on the site, Feeding the mixed feed containing the agent, feed feeding process, managing the temperature, humidity, ventilation, etc. in the fermentation bed and barn, fermenting bed management process, and storing the fermented and matured litter in the fermentation bed as compost And a bedding storage process.

According to a seventh aspect of the present invention, in the livestock excrement disposal method according to the sixth aspect of the present invention, the mixing ratio of the large sawdust, rice husk, large sawdust, rice cake containing a biocide and livestock excrement in the litter preparation step is about It is characterized by being 25-35%, large sawdust about 45-55%, rice bran containing live fungus about 3-8%, and livestock excrement about 10-20%. For example, in the case of pigs, the above numerical range is adjusted and changed according to the shape, surface area, and volume of piglets, adult pigs, and pig buns.

According to an eighth aspect of the present invention, in the livestock excrement disposal method according to the sixth to seventh aspects of the present invention, the viable fungus added to the mixed feed is at least 0.1 to 0.3% of the total feed. It is characterized by.

A ninth invention is characterized in that in the excrement disposal method in a barn according to the sixth to eighth inventions, the raw material of the viable agent is Bacillus natto. A tenth aspect of the invention is the livestock barn according to the first to fourth aspects, or the sixth to ninth aspects of the invention, wherein the livestock is a pre-partum livestock or a milking / feeding livestock. This is a method for treating excreta in a barn. An eleventh invention, barn is a 6-9 excrement treatment method in barn according to the invention, wherein it does not as components septic tank.

The barn and the excrement disposal method in the barn according to the present invention have the following effects. That is, according to the first and second inventions, the excreta excreted by the adult livestock entering the plurality of compartments arranged on both sides of the fermentation bed falls on the fertilizer bed litter, and the feces are fermented in the litter. Since the urine is evaporated by fermentation heat, it does not give off a bad odor, and the feeding box is located on the side of the partition, so the partition is clean and pre-partum Adults have a strong appetite and can give birth to healthy offspring.

According to the third to fifth inventions, since the livestock are kept free in the pool-shaped fermentation floors in which the laying material is laid in a substantially flat shape, the livestock is free from any stress and manure excreted every day. Treated with viable bacteria and fermented fever improves the breeding environment, and the growth is smooth without being affected by disease.

According to the sixth aspect of the invention, heavy machinery such as an excavator car and a loader car is used mainly when the fermentation bed is constructed and when the bedding in the fermentation bed is replaced every three years at the time of recycling. There is no machine equipment that is always in operation from the process of preparing the litter to the 4th feed feeding process, so the running cost is extremely low, and the husks, large sawdust, rice bran and livestock excretion of the litter used in the fermentation bed are very small. The waste is an effective reuse of industrial waste, and its cost is low except for the live bacteria agent. Furthermore, it can be fermented through the excrement of livestock dropped on the bedding, and the bedding temperature can be kept at about 60 ° C to 70 ° C, so that not only gas or electric heaters are required, but also pathogens in the bedding, external Since the parasites are killed, all the livestock from the parent livestock are free from disease and are bred smoothly as healthy livestock.

According to the seventh invention, the mixing ratio of large sawdust, rice husk, viable fungus and livestock excrement to be put into the fermentation bed is about 25 to 35% of rice husk, about 45 to 55% of large sawdust, and rice bran containing live fungus. Because it is about 3 to 8% and about 10 to 20% of livestock excrement, the bedding is easily fermented, the natto bacteria of the live fungus are digested using the feces of the livestock, and the urine is evaporated by the heat of fermentation. So there is no odor generation.

According to the eighth and ninth inventions, the viable agent added to the mixed feed is 0.1 to 0.3% of the whole feed, and the viable agent is Bacillus natto which is a kind of Bacillus subtilis. Since it is selected and mixed with feed, it prevents the occurrence of bad bacteria of intestinal bacteria due to the stress of livestock, prevents diarrhea and loose stool, and excreted by the synergistic effect of enzymes in natto and live bacteria The odor of manure is decomposed and becomes almost odorless, resulting in health and environmental purification of the livestock and pollution prevention. Further, the effectiveness of antibacterial substances, which are metabolites produced by viable bacteria, and the vigorous reproduction ability of viable bacteria also exerts the effect of preventing the growth of harmful microorganisms. According to the tenth aspect, the following effects can be achieved. The inventor, for example, as a method for treating excrement in barns, for example, forming a concave groove in the center of the site, collecting the manure dropped in the concave groove into one of the concave grooves with a scraper, We separated the manure and sent solid matter to the compost tank to make compost, and sent the liquid content to the septic tank to come up with a waste disposal method in the barn, but there were concerns about the following points: . In other words, livestock before delivery, or livestock that are milking or breastfeeding are very nervous for livestock traders to be very clean, but it is generally difficult to think of the idea of processing manure in a barn There was. In such a case, the inventor dares to create a concave groove in the center of the barn instead of discharging the manure into the barn and processing the manure in the compost or septic tank, and form a fermentation bed in the concave groove. As a result, a method for treating excreta in a barn with a closed system that hardly discharges manure was completed. Since this requires an idea that breaks common sense, the configuration of the present invention has a remarkable effect that cannot be predicted by those skilled in the art. According to the eleventh aspect of the present invention, it is a great feature that the barn does not require a septic tank by using a closed system using a fermentation bed. In the case of small and medium-sized livestock farmers, because the septic tank installation costs are required about two 10000000-3 million yen, this is a big burden, but it can become and development of the neck of the livestock industry, by the present, barns is a septic tank Since it was not necessary, the remarkable effect of reducing the initial cost could be achieved. Compost was also about 1/10 of the prior art and realized a closed system, which greatly contributed to environmental problems by eliminating composting problems.

A preferred embodiment of the pig farming will be described below with reference to the accompanying drawings. 1 is a partially cutaway plan view of a delivery house which is a barn according to the present invention, FIG. 2 is a partially cutaway sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a partially cutout of a piglet house which is another livestock house. 4 is a partially cutaway cross-sectional view taken along line 4-4 of FIG. 3, FIG. 5 is a flowchart of a method for treating excrement in a barn, and FIGS. 6 (a), (b) and (c) It is creation explanatory drawing.

As shown in FIGS. 1 and 2, the delivery building 1 according to the present invention may have a simple roof 2, pillars, etc., and a plurality of ventilation devices such as a plurality of ventilation fans 3 are arranged in the building. An upper / lower curtain 4 is provided. 5 is a concave straight groove having a depth of about 1 m and a width of about 3 m excavated by a shovel car or the like, which is formed so as to divide the central portion of the site, and is flattened by the groove 5 and a loader vehicle. A fermented bed H is formed by striking concrete having a thickness of about 10 cm to 12 cm, and a plurality of compartments R for accommodating one delivery pig P1 are arranged on both sides of the fermented bed H. A bait box 7 is installed. S is a laying laid slightly above the height of the fermentation bed H and substantially horizontally with the ground GL, and the buttocks are placed on the fermentation bed H so that the excrement of the delivery pig P falls on the laying S of the fermentation bed H. It is accommodated with its head facing the bait box 7. In addition, 8 and 9 are opening / closing doors provided in the front of the delivery house 1, which are opened and closed when the delivery pigs P, the litter S and the like enter and exit.

3 and 4 show a piglet house 10, and the house may have a simple roof 20, pillars 30 and the like as in the delivery house 1, and a plurality of ventilation devices such as a plurality of ventilation fans 30 are provided in the house. An upper and lower open / close curtain 40 is provided for ventilation. A rectangular pool-shaped concrete fermentation bed H10 having a depth of about 40 cm, a width of about 9 m, and a length of 40 m is formed horizontally on the ground GL flattened with a loader vehicle or the like, and along the periphery of the fermentation bed H10. An enclosure frame F is erected. 60 is a passage, and a plurality of bait boxes 70 are arranged along the frame F. In addition, 80 and 90 are opening / closing doors provided in front of the piglet house 10, which are opened and closed when the piglet P10, the litter S and the like enter and exit.

FIG. 5 shows the flow of the processing method in the present invention. The first stage is a litter preparation process. As shown in FIG. 6 (a), the raw material of the litter S is rice husk 14, swine manure 15, live bacteria agent. In order to make a bedding S having a height of 60 square meters and a height of 40 cm, for example, with rice bran (hereinafter referred to as “Lactococcus 16”) mixed with Lactobacillus natto (trade name: produced by Lactose Enzyme) as About 12 to 15 cubic meters, large sawdust 17 about 7 to 9 cubic meters, lacto bacteria 16 about 104 kg (mixed with 100 kg of rice bran 4 kg of lacto natto (trade name)), rice husk 14 mixed with manure 15, and large sawdust 17 total 7 to 9 As shown in FIG. 6 (a), the cubic meters are sequentially expanded step by step, and water is sprayed so that the moisture content of the entire bedding is about 45-55%. ,small So that a height of about 1m20cm~1m30cm as have mountain pile collected in the center of the fermentation bed H. FIG. 6C is a plan view thereof.

The second stage is the fermentation process, and the litter S collected and stacked in the center of the fermentation bed H starts fermentation immediately after it and confirms that its temperature is 50 ° C to 70 ° C after about one week. Then, the covering material S is spread so as to rise a little over the entire fermentation bed H, and the large sawdust 17 is distributed on the upper surface thereof.

In the third stage, the piglet whose weight has become 30 kg or more in the breeding process is raised and raised in the piglet house 10 with the pool-like three-fermented bed H10 shown in FIGS. The pigs enter the delivery house 1 with a partition R for each head on both sides of the fermentation bed H in which the groove 2 shown in FIGS. 1 and 2 is formed. The head is directed to H and the food box 7 is directed.

The manure excreted by the piglets in the piglet falls directly on the bedding S10 of the fermentation bed H10, the manure is consumed by the lactobacterium 16, the urine is transcribed by the heat of fermentation, and the inside of the pighouse is kept clean. The manure excreted by the adult pigs in the delivery house 1 falls indirectly on the bedding S of the fermentation bed H, the feces are consumed by the lactobacillus 16, the urine is evaporated by the heat of fermentation, and the interior of the delivery house is clean. Retained.

The fourth stage is a feed feeding process, where lactobacterium 16, which is a kind of Bacillus subtilis, is added to the feed and fed, so that good bacteria increase in the intestines of pigs, so that diarrhea does not occur and loose stool does not occur The health condition will continue and the growth will be accelerated. Some of the natto bacteria are discharged as spores together with feces and mixed with bedding to germinate and promote aerobic fermentation without odor.

The fifth stage is a fermentation bed management process. Since pigs, especially piglets P10, are sensitive to temperature, the temperature of the bedding S10 of the fermentation bed H10 is constantly observed with a thermometer or the like, and manure is 4 to 5 days. Once in the middle of the fermentation bed H, the work is turned back to a small depth of about 20 cm so that the moisture is not biased, and the entire surface is returned to the top at a depth of about 30 cm once a month. In addition, when the outside air temperature is too high in summer, the upper and lower curtains 40 are opened to improve the air permeability by using the ventilation fan 30 and adjust the temperature and humidity in the pig house.

The sixth stage is a re-fermentation / reuse process. The bedding after the pigs are shipped is fermented again and reused. The process from the first stage bedding preparation process to the re-fermentation / reuse process of the sixth stage is repeated (see FIG. 5). The process from the first stage bedding preparation process to the re-fermentation / reuse process of the sixth stage takes about three months, and the process is repeated about three times per year. Then, after 3 years, the process moves to the seventh stage rug storage process, where the rug is stored and converted into organic fertilizer. The seventh stage is the litter storage process. Since the litter S fermented and matured in the fermentation bed H becomes good organic compost, it is taken out from the fermentation bed H, stored in a storage, etc., and sold to vegetable farmers, etc. Can do. After moving to the litter storage process, the litter is stored for a few months and then shipped as compost. Currently, compost is often advocated for the effective use of biomass, and is usually a surplus in the market. Therefore, it is desirable to treat the compost as a closed system as much as possible even in the livestock excreta treatment process so as not to leave the system. In line with this, in the livestock excrement disposal process of the present application, the amount of compost is reduced to 1/10 or less than the conventional excrement disposal process.

It is a partial notch top view of the delivery house of the livestock barn based on this invention. FIG. 2 is a partially cutaway sectional view taken along line 2-2 of FIG. It is a partially cutaway top view of the piglet house. FIG. 4 is a partially cutaway sectional view taken along line 4-4 of FIG. It is a flowchart of the excrement disposal method in a barn same as the above. (A), (b) and (c) are creation explanatory drawings of a litter.

Explanation of symbols

1 Delivery building 2 Roof H Fermentation floor S Litter 5 Groove 6 Passage 7 Feeding box P Delivery pig 14 Rice husk 15 Manure 16 Lactococcus 17 Large sawdust

Claims (5)

A concave groove is formed in the central part of the site, and a fermentation bed for laying a litter made of rice husk, large sawdust, rice cake containing a biocide and livestock excrement is formed in the concave groove, and both sides of the fermentation bed are formed. Is a method for processing excrement in a barn where a plurality of compartments having a space for one livestock are provided, and a laying material for making a laying material comprising rice husk, large sawdust, rice bran containing Bacillus natto and livestock excrement A fermenting step of introducing and fermenting a bedding material into the fermentation bed; a breeding step of raising livestock directly or indirectly on the fermented fermentation bed; and natto for the livestock raised on the site A feed feeding process for feeding a mixed feed containing bacteria, a fermentation bed management process for controlling the temperature, humidity, ventilation, etc. in the fermentation bed and barn to keep the bedding temperature at about 60 ° C. to 70 ° C., and re-fermentation・ Reuse process and fermented ripening in the fermentation bed Bedding and storage process, and having a waste management method in the barn for storing the litter as compost. The mixing ratio of rice husk, large sawdust, natto- containing rice bran and livestock excrement in the litter preparation process is about 25-35% rice husk, about 45-55% large sawdust, about 3-8% rice bran containing natto , and livestock excretion. The excrement disposal method in a barn according to claim 1 , wherein the waste is about 10 to 20%. The method for treating excreta in a barn according to any one of claims 1 to 2 , wherein the Bacillus natto added to the blended feed is at least 0.1 to 0.3% of the total feed. The method for treating excreta in a barn according to any one of claims 1 to 3 , wherein the livestock is livestock before delivery, or livestock that is milking or breastfeeding. Waste management method in the barn according to any one of claims 1 to 4, barn is characterized not as a component of a septic tank.

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