WO2004107854A1

WO2004107854A1 - Livestock-raising floor and method of raising livestock

Info

Publication number: WO2004107854A1
Application number: PCT/JP2003/007268
Authority: WO
Inventors: Isao Horiuchi; Koubu Ri; Minoru Hirama; Yuhichi Hirose; Masahiro Itoh
Original assignee: Japan Applied Microbiology Research Institute Ltd
Priority date: 2003-06-09
Filing date: 2003-06-09
Publication date: 2004-12-16
Also published as: TW200427403A; AU2003242058A1

Abstract

A floor face (2) of a livestock-raising barn (1) shown in Fig. 1 to Fig. 3 is finished with concrete. Air pipe (3) is laid in a groove (5) provided in the concrete floor face (2). The air pipe (3) is formed with an outer periphery pipe (3a) laid along the periphery of the concrete floor face (2) and connection pipes (3b) connecting the left and right sides of the outer periphery pipe (3a) at predetermined intervals. One end of the outer periphery pipe (3a) is connected to a blower unit (4) installed outside the raising barn (1). Air is uniformly blown to the entire part of the concrete floor face (2) through the air pipe (3). Covering material (7) made of organic fiber material to which aerobic bacteria are adsorbed is laid to cover across the floor face (2). The covering material (7) contains used oolong leaves. With this floor structure, livestock excrement is sufficiently decomposed. A method of raising livestock regenerates the excrement decomposed as feed for the livestock, and do not use it as composted manure.

Description

Description ^: Livestock breeding floor and livestock breeding method

The present invention relates to livestock breeding beds and livestock breeding methods, and particularly to livestock breeding beds suitable for decomposing a large amount of excrement in a pig farm and further reusing this as feed for pigs, and The method of raising livestock. Background art

In general, the biggest problem in large-scale livestock breeding farms, such as pig farms, is the treatment of large amounts of excrement, and the odor and mass disposal of excrement are major environmental problems. Conventionally, to solve this kind of problem, a floor structure has been proposed in which a mixture of fermentation bacteria and rice bran is mixed with sawdust and rice husk on a concrete floor in a piggery. The purpose of such a floor structure is to decompose the excrement of pigs by fermenting bacteria, suppress the bad smell, and reuse the excrement as compost fertilizer.

However, in the above-mentioned conventional floor structure, fermentation bacteria are simply mixed into sawdust and rice hulls and deposited, and pigs are reared on top of them. If it gets too moist, the fermentation bacteria will not work well and the odor cannot be eliminated. In addition, since the fermented and decomposed manure remains as compost, if it is stored in large quantities, it may cause new environmental problems.

An object of the present invention is to provide a livestock breeding floor and a livestock breeding method that can solve such problems. Disclosure of the invention

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that a litter obtained by mixing oolong tea lees with oga powder can suppress malodor, and arrived at the present invention.

That is, the livestock breeding floor according to the present invention is provided with a groove for laying an air pipe on the floor surface, and an air pipe provided with a plurality of small holes for blowing air in the groove. A bedding made of an organic fiber material having aerobic microorganisms adsorbed thereon is spread on the floor, and the bedding contains perilla tea lees.

Further, the livestock breeding floor according to the present invention is characterized in that the microorganisms include at least one of bacteria and mold that decompose livestock excrement under aerobic conditions, and lactic acid bacteria.

Further, the breeding floor for livestock according to the present invention is characterized in that the bacterium is Cytophaga, the viscera is Trichoderma, and the lactic acid bacterium is Streptocoecus. It is characterized by being at least one of the genera (L actobachillus).

Further, the livestock breeding floor according to the present invention is characterized in that the organic fiber material contains any one of sawdust, potato skin, chaff, and regenerated natural pulp.

Further, in the method of raising livestock according to the present invention, air is supplied to an air pipe piped to a floor, and air is blown out from a plurality of small holes provided in the air pipe, so that air is blown on the floor. The inside of the litter made of the spread organic fiber material is maintained in an aerobic atmosphere and a water-containing state suitable for aerobic fermentation, and the organic fiber material is absorbed by the aerobic microorganisms adsorbed on the organic fiber material. Characterized in that the excrement of livestock excreted above is decomposed, The litter is characterized by containing oolong tea lees.

Further, the livestock breeding method according to the present invention is characterized in that the used litter after the excretion of the livestock is decomposed is fermented with yeast, and the litter is used as livestock feed.

Further, the method of raising livestock according to the present invention is characterized in that the yeast is of the genus Saccharomyces (Saccharomyces). ADVANTAGE OF THE INVENTION According to the livestock breeding floor and livestock breeding method according to the present invention, it is possible to suppress the odor of the excrement of livestock and to use the used litter as feed for effective use. Can be bred. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic diagram showing a breeding house according to the present invention.

FIG. 2 is a sectional structural view of the breeding floor.

FIG. 3 is a detailed view of a piping structure of an air pipe.

FIG. 4 is a graph showing the change over time of the ammonia concentration of the litter in Example 1 and Comparative Examples 1 and 2.

FIG. 5 is a graph showing the temporal change in the amine concentration of the litter in Example 1 and Comparative Examples 1 and 2.

FIG. 6 is a graph showing the degree of bad smell of feces for each feed in Examples 2, 3 and Reference Example 1.

FIG. 7 is a graph showing the relationship between feed and litter growth for each litter in Examples 2, 3 and Reference Example 1.

FIG. 8 is a graph showing the amount of food consumed by pigs for each litter in Examples 2, 3 and Reference Example 1.

Figure 9 shows the breeding demand rate for each litter in Examples 2, 3 and Reference Example 1. FIG. BEST MODE FOR CARRYING OUT THE INVENTION

In order to explain the present invention in more detail, embodiments of a livestock breeding bed and a livestock breeding method according to the present invention will be described in detail with reference to the accompanying drawings. The embodiment describes pig breeding, and FIG. 1 is a schematic diagram showing a pig breeding house. FIG. 2 is a sectional view showing the structure of the breeding floor, and FIG. 3 is a sectional view showing the piping structure of the air pipe in detail.

The floor 2 of the pig breeding house 1 shown in FIGS. 1 to 3 has a concrete finish, and an air pipe 3 is piped to the entire concrete floor 2. The air pipe 3 is composed of an outer pipe 3a piped along the periphery of the concrete floor 2, and a connecting pipe 3b connecting the left and right sides of the outer pipe 3a at predetermined intervals. Have been. One end of the outer peripheral pipe 3 a is connected to a blow unit 4 installed outside the breeding house 1, and the air is uniformly blown to the entire concrete floor 2 through the air pipe 3. The air pipe 3 is provided with small holes 6 for blowing air at intervals of 20 to 30 cm (centimeter) throughout the entire pipe, and air blown from the blow unit 4 is provided. Blows out from these small holes 6 all at once. It is appropriate that the diameter of the small hole 6 is about 2 mm (millimeter). If the size is too small, the blowing amount may be insufficient, and if the size is too large, clogging may be caused by the litter 7 laid on this. In addition, it is preferable that the small holes 6 are provided alternately obliquely upward as shown in FIG. 3 because air can be easily distributed and clogging does not easily occur.

As shown in FIG. 2 and FIG. 3, the air pipe 3 is piped in a groove 5 formed in the concrete floor 2, and the concrete pipe 3 2 Considered not to protrude above. In addition, in Fig. 1, a passageway 12 partitioned by an iron fence 11 is provided along the peripheral wall 13 around the breeding house 1, and a feed box 14 is provided inside the iron fence 11. It has been placed. A litter 7 is laminated on the concrete floor 2 on which the air pipe 3 is provided. The litter 7 is made of an organic fiber material, and is exemplified by natural materials such as sawdust (oga powder), rice hulls, rice straw, hay, potato skin such as potatoes, and regenerated natural pulp. Is done. This is made by mixing natural pulp with a force-olin material (adhesive material) or lime calcium and compressing it to form a flake. It absorbs moisture by capillary action and can be fixed inside the fiber. it can. Commercially available recycled pulp can be used [trade name: Absolute Bento GP: manufactured by Absorption Corp. (USA)]. These may be used alone or as a mixture. In the present invention, oolong tea cake is further mixed with the litter 7. This oolong tea lees uses pressed lees after hot water extraction of oolong tea leaves. The use of industrial waste after the production of tea beverages can be used effectively. Woong tea cake may be used in a wet state or in a dried state, and since the pressed product can be used in a wet state, no special treatment step is provided. May be. If oolong tea lees are to be stored for a long period of time, they can be dried as necessary so that they can be used when needed. It is preferable that the water content of the litter 7 after mixing the oolong tea lees is in a range where the following microorganisms work effectively, for example, about 50 to 60% (percent).

Around the groove 5 where the air pipe 3 is provided, sawdust 10 having a large particle size is laid to prevent the small hole 6 opened in the air pipe 3 from being blocked. The thickness of the layer of the litter 7 is preferably about 15 to 20 cm. Litter 7 may be formed in one layer or concrete —A two-layer structure of a base layer 8 laid directly on the floor 2 and a working layer 9 laid on the base layer 8 may be used. In this case, the base layer 8 is composed of large particles, and the working layer 9 thereon is made of particles smaller than the base layer 8, so that the air blown out from the air pipe 3 also acts on the working layer 9 effectively. It is preferable to do so. The thickness of each of the base layer 8 and the working layer 9 is about 10 cm.

Aerobic microorganisms are adsorbed on the litter 7 described above. In the present invention, the microorganism used for the fermentation of the litter 7 is at least one of a bacterium and a fungus that decompose the excrement of livestock contained in the used litter 7 under aerobic conditions to facilitate digestion, Lactic acid bacteria that convert degraded sugars into acids. The main component of animal excrement is cellulose, which is broken down into sugars by the action of aerobic microorganisms, and further produces alcohol, organic acids, and esters to produce easily digestible feed. . The malodorous substance contained in the used litter 7 is mainly ammonia, but the malodor can be suppressed by being neutralized by the lactic acid produced by the lactic acid bacteria to form an odorless ammonium lactate. In the present invention, since the used litter 7 is reused as fermented feed as described later, lactic acid bacteria are also important in that they have an intestinal function and an effect of suppressing pathogenic bacteria.

Examples of the bacteria include Cytophaga, Sporocytophaga, Pseudomonas, Notifles (Bacillus), and Celeromonas. na s), Streptomyces (Strepto my ces), Micromonaspora (Micromo no spora,), Strepto. Cellulose-degrading bacteria such as Tosporangium (S treptosporang i um Nocardia) are used, and the above-mentioned powertrain is Trichoderma viride (T richode rma vi ri de). Schizolem (Peni cillium pus il lum), Aspergillus' Teleus (Aspe rg i 11 uste reu s), Aspergills niga 1 (Aspe rg il 1 us ni ger), Bas idi omyc etes, Chrysosporium 'Pluinosum (Chrysospori um pru ino sum) and the like have high C 1 -activity and are therefore effective for cell-mouth degradation.

Examples of the lactic acid bacteria include Lactobacillus acidophiles of the genus Lactobacillus (^ L actobacillusaci doph i lus), Lactobacillus-brevis (Lactobacillus lubrebrevis), and Lactobacillus bulgaricus (Lactobacillus bulgaricus). bu 1 gar icus) _N- lactobacillus 'casey (Lac t obacil li li! s cas ei), lactobacillus salmon (Lact obac il lus sak e), lactobacillus' kefir (Lactobacillus kefir) , Lactobacillus' lactis (L actobaci 11 us 1 actis), and the like, Streptococcus saimomo finores (Streptococcus sammo finoles) (Streptococcus cus faeca 1is), Streptococcus For example, Coccus 'Salivarius (Strep tococcus sal ivar ius), Streptococcus' bobis (Streptococcus bovis) and the like are used.

The amount of these microorganisms to be added is appropriately selected according to the material and condition of the litter 7. As a method of adsorbing these microorganisms to the litter 7, a suspension containing the above microorganisms, for example, about 10 ⁹ to ^{1 Q} / ml (milliliter) is prepared, and There is a method of spraying about 100 ml per 10 kg (kilogram) of the litter 7 from the litter 7. The above three microorganisms May be sprayed, or each microorganism may be separately diluted and sprayed.

In the breeding house 1 configured as described above, the air fed by the blow unit 4 to the air-pipe 3 spreads to every corner of the outer peripheral pipe 3a and the connecting pipe 3b, and is spaced 20 to 30 mm apart. It blows out from all the small holes 6 provided in. As described above, the small holes 6 of the air pipe 3 are provided alternately diagonally upward, and the periphery thereof is surrounded by sawdust 10 having large particles, so that the small holes 6 are not clogged, and the inside of the litter 7 is The air is blown enough. The interior of the litter 7 is kept in a water-containing state suitable for aerobic fermentation of microorganisms, and at the same time, the entire litter 7 is kept in an aerobic atmosphere, and the action of the microorganisms adsorbed on the litter 7 becomes active. When pigs are bred in such an aerobic atmosphere, manure excreted from the pigs is effectively decomposed by vigorous microorganisms, and organic acids, alcohols, esters, carbon dioxide Generate etc. Since these products are almost odorless, they do not generate odor when deposited on litter 7. Further, alcohol or organic acids, Note _c ester, etc. can be reused as it is as easy feed digested, as in the prior art, the inside of the bedding 7 acts microorganisms become inactive become anaerobic atmosphere Insufficient decomposition leads to the production of ammonia, amines, mercaptan, etc., resulting in foul odors.

Next, a method for recycling used litter 7 as feed will be described. As mentioned above, the excrement contained in the used litter 7 is decomposed to produce alcohol, organic acids, esters, etc., and is easily digested. It can be used as feed, for example, by mixing with it, but it is odorless and has little appeal as a feed. Therefore, the used litter 7 is accumulated in the corner of the breeding house 1 every several power months or when the pigs are shipped, and the accumulated matter 15 is put into a simple mixer as appropriate. Then, a diluted solution of yeast is sprayed on this. This yeast is sprinkled for the purpose of accelerating the fermentation of the product and giving it an aroma. The aromatic Saccharomyces genus Schizosaccaris omy ces) and many yeasts belonging to the genus Tofrera (T oru 1a) are available, for example, Saccharomyces cerevisiae, Saccharomyces cerevisiae ardi), Saccharomyces 'Severieri (S acchar omy cesch Θa 1 ieri), Saccharomyces' disposals (S acchar omy cesdisporus), Saccharomyces * S. And so on.

The aroma can be added by adsorbing the yeast on the aggregate 15 and stirring and fermenting the yeast. Suitable fermentation temperature and fermentation time vary depending on the microorganism to be used. For example, when S. calomyces cerepiche is used, it can be obtained by fermenting at 20 to 35 ° C for about 24 to 48 hours. In addition to the yeast, sugars may be added to promote fermentation, or lactic acid bacteria may be further added.

Since the fermented smell incites the pig's appetite, this fermented feed is mixed with a compound feed or the like, and fed to a pig in a feed box 14 placed around the breeding house 1. If the excrement of pigs is decomposed as described above, it will not be possible to distinguish them from the materials that make up the litter 7, so they will accumulate with the litter 7 by bulldozers or the like. A new litter 7 is laid on the concrete floor 2 from which the used litter 7 has been removed, and the above three types of microorganisms are newly sprayed and adsorbed thereon. By repeating this, pigs can be raised without producing a large amount of waste as in the past. Can grow up.

In the above description, the case where pigs are bred by mixing three types of microorganisms and adsorbing them on the litter 7 has been described. However, it is not always necessary to use the three types of microorganisms together. Further, in addition to the above three kinds of microorganisms, the above yeast may be adsorbed together to promote fermentation. In the above embodiment, the breeding of pigs has been described. However, it goes without saying that the present invention can be applied to livestock other than pigs such as cows, horses, and sheep.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the scope of these Examples.

(Example 1)

On the 2 0 m rectangular concrete floor surface partitioned into ^two, and oolong tea dregs were O moth powder and Shimetsu 7 were mixed in a ratio of 3, a microorganism thereto, rhino Tofa one moth 'Arubenshikora (about 1 0 ^1. cells / ml), Trichoderma 'bi Ride (approximately 1 0 ^1. or Zm l), the suspension of Lactobacillus bulgaricus (approximately 1 0 ^{1 0} / ml), bedding 7 approximately 1 0 kg A breeding floor was created using litter 7 sprayed at a rate of about 100 m1 each, and 14 pigs weighing 30 to 35 kg were bred. In order to observe the deodorizing effect, the oga powder used in this example was mixed with about 4 unused oga powders and about 6 used ogre powders with bad odor. The feed used was a commercially available compound feed (trade name: Winnie Pork M, manufactured by Nippon Nosan Kogyo Co., Ltd.).

(Comparative Example 1)

Same as Example 1 except that only oga powder mixed with used ogre powder was used and litter 7 sprayed with the same microorganisms as in Example 1 was used as in Example 1 above. And raised 14 pigs.

(Comparative Example 2)

Use a litter 7 consisting of new oga flour without spraying microorganisms. Except for, 14 pigs were raised in the same manner as in Example 1.

[Measurement of odorous substances]

The weight of the offensive odor in the used litter 7 in Example 1 and Comparative Examples 1 and 2 was measured. A total of 150 g of used litter 7 of 30 g (gram) was collected from a total of 5 places at the four corners and the center of the breeding floor used in each case, and a flexible tube was connected to the lid. The bottle was placed in a soft plastic bottle having a capacity of about 500 ml. Three bottles were prepared for each case. The tube was closed and sealed, and allowed to stand at 25 ° C. for 2 hours. Then, the tube was connected to a Kitagawa type detection tube, and each of the odorous substances such as ammonia and amines was measured. The measurement was carried out seven times from the 8th day to the 58th day after the start of breeding. The measurement results are shown in Fig. 4 for ammonia and in Fig. 5 for amines. The agar powder used in Example 1 and Comparative Example 1 contained the used powder at the start of the experiment as described above, and was about 20 ppm (Partsper mi 11 ion). Ammonia was detected.

In Example 1, the effect of suppressing the offensive odor quickly appeared, and the effect was maintained during the experiment. In Comparative Example 1 using litter 7 mixed with microorganisms, the malodor was suppressed, but in Example 1 using litter 7 mixed with oolong tea cake, the malodor could be suppressed to a lower value. . In Comparative Example 2, since a new oga powder was used, the odor was initially small due to the deodorizing effect of the new oga powder itself, but the odor increased rapidly in the latter half of the measurement period.

(Example 2)

In Example 2, a feed (referred to as a 20% mixed feed) prepared by mixing 20 parts by weight of fermented feed prepared as described below and 80 parts by weight of the above mixed feed was used. Using the same breeding floor as above, 14 pigs weighing 30 to 35 kg were bred for 121 days. [Preparation of fermented feed]

After shipping the pigs finished housed in the first embodiment, are integrated bedding 7, a suspension of yeast (Saccharomyces) (approximately 1 0 ⁸ / ml) and lactate bacteria (approximately 1 0 ^1. Or / ml) were sprayed at a rate of 100 ml per approximately 10 kg of the litter, and then mixed with a mixer. To promote fermentation of yeast, budose was added at about 3% (weight ratio) of litter 7 and fermented at around 35 ° C while observing the fermentation condition. The water content in the fermented used litter 7 was adjusted to 11 to 12% (weight ratio), which is almost the same as that of the mixed feed.

(Example 3)

Fourteen pigs were bred in the same manner as in Example 2 except that a feed obtained by mixing 40 parts by weight of the above fermented feed and 60 parts by weight of the above mixed feed (referred to as a 40% mixed feed) was used.

(Reference example 1)

Fourteen pigs were raised in the same manner as in Example 2 except that only the above-mentioned compound feed was used.

[Measurement of malodorous substances in pigs]

From the pigs raised in Examples 2 and 3 and Reference Example 1, three pigs were collected from each pig and the amounts of ammonia, amines, and hydrogen sulfide were detected in the same manner as in the measurement of the odorous substances in litter 7 above. It was measured using a tube. The measurement was performed 5 times every 3 days from the 50th day after the start of breeding, and the average value of each case was determined. Figure 6 shows the results. The results showed that pigs bred using a mixed feed containing fermented feed contained less malodorous substances in feces than pigs bred using a mixed feed alone.

[Pig weight gain]

The weights of the pigs bred in Examples 2, 3 and Reference Example 1 were measured over time, and their increasing tendency was examined. The values for each example are the pigs kept in each example. This is the average of 14 animals. Fig. 7 shows the results. From these results, it was found that the weight gain of pigs was the same as that of the compound feed even when the mixed feed with the fermented feed was used.

[Pork consumption]

The amount of food consumed by the pigs raised in Examples 2 and 3 and Reference Example 1 was measured over time, and their increasing tendency was examined. The value in each case is the total weight of the feed that the 14 pigs in each case consumed during the day of the measurement. Figure 8 shows the results. From these results, it was found that there was almost no difference in the amount of food consumed by pigs even when the mixed feed supplemented with fermented feed was used.

[Feed demand rate]

Feed conversion is the amount of food required to increase a pig's body weight by 1 kg. The feed demand was calculated for the pigs raised in Examples 2 and 3 and Reference Example 1. The values in each case are the average of 14 pigs raised in each case. Fig. 9 shows the results. From these results, it was found that the fluctuation pattern of the feed demand rate was almost the same even when the mixed feed to which the fermented feed was added was used.

(Example 4)

And O gas dust and damp Oolong residue was mixed 1: 1, to which, Asuperu Gills-nigga i (. About 1 0 ¹ / ml) and streptavidin Kozuka scan 'Hue chalice (approximately 1 0 ^{1 ('} number / 1111) were bred on a litter 7 of approximately 100 kg per litter 7 with 10 litters, and 14 pigs weighing 30 to 35 kg were bred for 119 days. A mixed feed containing 35% fermented feed was used The ammonia concentration of the used litter 7 was measured in the same manner as in Example 1. During the raising period, the ammonia concentration was reduced to a low value of about 5 ppm or less. (Example 5)

Oga powder and moist oolong tea lees were mixed at a ratio of 1: 2. Using litter 7 sprayed with the same microorganisms, 14 pigs weighing 30 to 35 kg were bred for 119 days. As the feed, a mixed feed containing 35% as in Example 4 was used. The ammonia concentration of the used litter 7 was measured in the same manner as in Example 1 above. During the breeding period, the concentration of ammonia was maintained at a low value of about 5 ppm or less.

(Example 6)

Potato skin and wet oolong tea lees were mixed at a ratio of 1: 2, and the same microorganisms as in Example 4 were spread on the litter 7 to obtain 14 pigs weighing 30 to 35 kg. They were reared for 19 days. As the feed, a 35% mixed feed was used as in Example 4. The ammonia concentration of the used litter 7 was measured in the same manner as in Example 1 above. During the breeding period, the concentration of ammonia was maintained at a low value of about 5 ppm or less.

[Ship grade]

The pigs bred using the 35% mixed feed in Examples 4 to 6 were shipped, and evaluated for grades by the Japan Meat Rating Association. Grades are evaluated based on the criteria of meat, meat, meat texture, color, fat color, fat, etc., and are classified as top, medium, average, etc. As a result, the top was 10%, the middle was 51%, and the average was 19%. According to data from the Yamanashi Prefectural Meat Distribution Center, the average percentage of all pigs shipped was 30% at the top, 40% at the middle, about 20% at the average, and about 10% at the outside. It is about 70% for medium or higher. Compared to this data, the pigs bred in Examples 4 to 6 were 80% in medium and higher, and had an equal or non-zero value. It can be said that many were obtained. Industrial applicability

As described above, the livestock breeding floor according to the present invention and livestock breeding According to the method, the effect of preventing malodor was obtained by using a breeding bed using litter 7 mixed with oolong tea. In addition, raising livestock using fermented feed made by recycling fermented litter 7 mixed with oolong tea not only has the effect of reducing the foul odor of livestock dung, but also has the effect of growing livestock. Is not inferior to conventional ones, and can raise livestock of good quality.

Claims

The scope of the claims

1. A groove for laying an air pipe is provided on the floor, and an air pipe with a plurality of small holes for air blowing is provided in this groove, and aerobic microorganisms are adsorbed on the floor. A livestock breeding floor, characterized in that a laying material made of an organic fiber material is spread, and the laying material contains oolong tea lees.

2. The livestock breeding floor according to claim 1, wherein the microorganisms include at least one of bacteria and mold that decompose livestock excrement under aerobic conditions, and lactic acid bacteria. .

3. The bacterium is at least one of the genus Cytophaga, the bacterium is at least Trichoderma, and the lactic acid bacterium is at least one of the genus Streptococcus and the genus Lactobacillus. The livestock breeding floor according to claim 2, wherein:

4. The livestock breeding floor according to claim 1, wherein said organic fiber material includes any one of sawdust, potato skin, rice hull, and natural pulp regenerated product.

5. Supply air to the air pipe piped to the floor, blow out air from a plurality of small holes provided in the air pipe, and remove the organic fiber material spread on the floor. Of the livestock excreted on the organic fiber material by the action of the aerobic microorganisms adsorbed on the organic fiber material, while maintaining the inside of the litter to be aerobic atmosphere and a water-containing state suitable for aerobic fermentation. A livestock breeding method characterized in that excrement is decomposed, and the litter contains a bite of tea lees.

6. The used litter after the excrement of the livestock is decomposed is removed by yeast. 6. The method of breeding livestock according to claim 5, wherein the bedding is used as livestock feed.

7. The method of raising livestock according to claim 6, wherein the yeast is of the genus Saccharomyces (Saccharomyces).