JP2006238820A - Bedding for livestock and method for recycling and using the same - Google Patents

Bedding for livestock and method for recycling and using the same Download PDF

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JP2006238820A
JP2006238820A JP2005060583A JP2005060583A JP2006238820A JP 2006238820 A JP2006238820 A JP 2006238820A JP 2005060583 A JP2005060583 A JP 2005060583A JP 2005060583 A JP2005060583 A JP 2005060583A JP 2006238820 A JP2006238820 A JP 2006238820A
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livestock
litter
bacteria
raw material
bedding
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Yuji Kikuura
裕二 菊浦
Tomohiro Nakamura
智寛 中村
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JAPAN FARM KK
SANKOO TECHNO KK
Satake Engineering Co Ltd
Satake Corp
SankoTechno Co Ltd
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JAPAN FARM KK
SANKOO TECHNO KK
Satake Engineering Co Ltd
Satake Corp
SankoTechno Co Ltd
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Publication of JP2006238820A publication Critical patent/JP2006238820A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive bedding which is used for livestock, can be produced from livestock feces produced in livestock barns in large amounts, can repeatedly be produced, can control livestock pathogenic bacteria, can use the livestock feces of industrial wastes to reduce the quantity of the industrial wastes to be treated. <P>SOLUTION: This bedding for livestock is produced by charging fowl droppings of raw material into the heating chamber of a heating apparatus, heating the outer periphery of the heating chamber with the exhaust heat of a burner, introducing the heat into the heating chamber, heating the raw material at about 90 to 110°C, simultaneously stirring the heated raw material for one hour, charging a degradative fermentation fungus such as Bacillus subtilis, yeast or Aspergillus oryzae, Bacillus subtilis or lactobacillus for controlling the proliferation of pathogenic microbes, and a degradative fermentation-promoting agent consisting mainly of chitosan and silicic acid aqueous solution, then stirring the mixture for about one hour, intermittently stirring and aerating the mixture for about two days to ferment the mixture, and drying the fermented product with exhausted heat to produce the bedding. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、豚・にわとり・牛・馬等の飼育舎の床に敷かれる床材(敷料)を、家畜から***される畜糞から安価に製造し、しかも家畜の病原菌の増殖を抑止し、家畜の病気を少なくできる有用な敷料に関する。又畜糞の有用の利用技術でもある。   The present invention produces a flooring material (laying material) laid on the floor of a breeding house such as pigs, chickens, cattle, horses, etc. at low cost from livestock excretion excreted from livestock, and suppresses the growth of pathogenic bacteria in livestock. It relates to a useful bedding that can reduce illness. It is also a useful technique for using livestock manure.

家畜用敷料は、特開2003−116390号公報に知られるように床の上にのこくず・牧草等植物質の敷料を敷いて床・畜舎の保温・床湿りの改善(乾燥化)を目的として使用されているが、長日数使用すると家畜の糞尿が多量に積もって湿ってくるとともに病原性の有害菌(大腸菌群等)が増殖し、悪臭・ガスも発生して弊害が発生する。   Livestock litter is intended to improve (dry) the floor and livestock's insulation and dryness by laying plant litter such as sawdust and pasture on the floor as known in JP-A-2003-116390. However, if used for many days, a large amount of livestock manure accumulates and gets wet, and pathogenic harmful bacteria (such as coliforms) grow, causing bad odors and gases and causing harmful effects.

従来、使用した敷料には畜糞が多量に積もる。約1tonの敷料に対し、50ton前後の糞尿が積もる。積もった糞と敷料は次の使用のため除去され、洗滌されて新しい床敷が敷かれて床は再使用される。除去された糞と使用済みの敷料の処理には堆肥化処分・焼却処分あるいは炭化装置で炭化する処分が採用されていた。それらのいずれの処分も手間・費用がかかるものであった。又のこくず・牧草等の新しい敷料に交換することは、床材料費がかかって費用が嵩むものとなっていた。   Conventionally, the litter used has a large amount of livestock droppings. About 1 ton of bedding, about 50 ton of manure accumulates. Accumulated feces and bedding are removed for subsequent use, washed and renovated, and the floor is reused. For the treatment of removed feces and used bedding, composting, incineration, or carbonization using a carbonizer was used. All of these disposals were time consuming and expensive. In addition, replacement with new litter such as sawdust and grass has been expensive due to the cost of floor materials.

旧来からなされてきた安価な野積みによる堆肥化方法は現在法律で禁止され、機械・設備で堆肥化せねばならず高価になっている。又焼却にも焼却設備を新設せねばならず難しいものであった。
更に炭化する処分は炭化設備が必要となってコストもかかって、これも採用しにくいものであった。
特開2003−116390号公報
The old method of composting by cheap fielding is now prohibited by law, and it has to be composted with machinery / equipment. Also, it was difficult to incinerate a new incineration facility.
Further, the carbonization disposal requires a carbonization facility and costs, and this is also difficult to adopt.
JP 2003-116390 A

本発明が解決しようとする課題は、従来のこれらの問題点を解消し、家畜舎に多量に発生する家畜の畜糞を主原料として敷料を製造し、畜糞の有効利用を図るとともに繰り返し使用できる安価な敷料を提供することにある。しかも家畜の病原菌の増殖を抑止できるという優れた特性を有する家畜用敷料を提供することにある。   The problem to be solved by the present invention is to solve these conventional problems, and to manufacture a litter using livestock excrement of a large amount of livestock generated in a livestock barn as a main raw material, and to make effective use of livestock excretion and inexpensive to use repeatedly Is to provide a reasonable bedding. And it is providing the livestock litter which has the outstanding characteristic that the proliferation of the pathogenic microbe of livestock can be suppressed.

かかる課題を解決した本発明の構成は、
1) 畜糞を主たる原料とし、同原料を撹拌しながら高温で加熱して殺菌処理し、その後有機物の分解発酵菌と家畜の病原菌を抑止する有用菌とを投入し、撹拌しながら畜糞の有機成分を分解発酵させるとともに、家畜の病原菌を抑止する有用菌を増殖させ、その後粉粒状に乾燥させて製造する、家畜用敷料
2) 殺菌処理が、90〜110℃で1〜2時間以上持続させて行うものである、前記1)記載の家畜用敷料
3) 有用菌が枯草菌・乳酸菌のいずれかを含むか又はその組み合わせの菌である、前記1)又は2)記載の家畜用敷料
4) 発酵させるときに、キトサンとケイ酸水溶液とを主成分とする分解促進剤を撹拌されている原料に混入させる、前記1)〜3)記載の家畜用敷料
5) おがくず又は牧草等の使用済み敷料を家畜の畜糞の原料に混入して一緒に分解発酵させる、前記1)〜4)いずれか記載の家畜用敷料
6) 前記1)〜5)いずれかで製造された家畜用敷料を畜舎で実際に敷料として使用し、その使用された敷料とその上に積もった家畜の糞とを原料とし、同原料を撹拌しながら高温で加熱して殺菌処理し、その後撹拌しながら畜糞の有機成分を分解発酵させるとともに家畜の病原菌を抑止する有用菌を有機物の分解発酵菌と家畜の病原菌を抑止する有用菌とを投入し、撹拌しながら畜糞の有機成分を分解発酵させるとともに、家畜の病原菌を抑止する有用菌を増殖させ、その後粉粒状に乾燥させて家畜用敷料として再利用する、家畜用敷料のリサイクル使用方法
にある。
The configuration of the present invention that solves this problem is as follows.
1) Livestock excrement is the main raw material, and the raw material is stirred and heated at a high temperature to sterilize it. Then, organic fermentative bacteria and useful bacteria that suppress livestock pathogens are added, and the organic components of livestock feces are stirred. 2) The sterilization treatment is continued at 90 to 110 ° C for 1 to 2 hours or more. The livestock litter as described in 1) above, which is performed 3) The livestock litter as described in 1) or 2) above, wherein the useful bacteria contain either Bacillus subtilis or lactic acid bacteria, or a combination thereof. 4) Fermentation When mixing, a decomposition accelerator mainly composed of chitosan and silicic acid aqueous solution is mixed with the stirred raw material, and the livestock bedding described in 1) to 3) above is used. 5) Used bedding such as sawdust or grass Livestock manure field The livestock litter 6) according to any one of 1) to 4), wherein the livestock litter produced in any one of 1) to 5) is actually used as a litter in a barn, The used litter and livestock excrement accumulated on it are used as raw materials, and the raw materials are heated at high temperatures while stirring and sterilized. Introducing useful bacteria that suppress organic matter and fermenting fungi of organic matter and useful bacteria that suppress pathogenic bacteria in livestock, while decomposing and fermenting organic components of livestock feces while stirring, grow useful bacteria that suppress pathogenic bacteria in livestock, Then, it is in a method for recycling livestock bedding, which is then dried into a powder and reused as livestock bedding.

本発明によれば、家畜飼育で発生する畜糞、又は敷料の上に敷料の数十〜五十倍程の多量に積もる畜糞を原料として敷料を製造するので、従来のおがくず・牧草に比べて安価な敷料を提供でき、しかも病原菌を抑止でき家畜の病気の発生を低下させることができ、又敷料は繰り返し使用できるという効果がある。更に畜糞の廃棄処分負担を軽減できる。   According to the present invention, since the bedding is produced using the livestock droppings generated by livestock breeding, or the livestock droppings accumulated in a large amount of several tens to fifty times as much as the bedding on the litter, it is cheaper than conventional sawdust and pasture. The bedding can be provided, the pathogenic bacteria can be suppressed, the incidence of livestock diseases can be reduced, and the bedding can be used repeatedly. Furthermore, the burden of disposal of livestock manure can be reduced.

本発明の加熱殺菌処理は、密閉した室中に畜糞を投入し、撹拌装置で撹拌しながら、その室の内外からバーナー等を使用して加熱する装置を使用するのが好ましい。又その加熱温度を90〜110℃として1〜2時間以上持続させれば、殺菌が充分にできるものとなる。
本発明の有機物分解発酵菌としては、枯草菌(Bacillus.subtilis),酵母菌(Sacchromyces.cerevisiae)、麹菌(Aspergillus.oryzae)等がある。
又、本発明の家畜の病原菌の増殖を抑止する有用菌としては、枯草菌(Bacillus.subtilis),乳酸菌(Lactobacillus.acidophillus)等がある。そのうち枯草菌は有機物分解発酵菌としても働くものである。
In the heat sterilization treatment of the present invention, it is preferable to use an apparatus in which livestock excrement is put into a sealed chamber and heated by using a burner or the like while stirring with a stirring device. Moreover, if the heating temperature is 90 to 110 ° C. and maintained for 1 to 2 hours or more, sterilization can be sufficiently performed.
Examples of the organic matter-degrading fermentative bacteria of the present invention include Bacillus subtilis, yeast (Sacchromyces. Cerevisiae), and Aspergillus. Oryzae.
In addition, useful bacteria that suppress the growth of pathogenic bacteria in livestock of the present invention include Bacillus subtilis, lactic acid bacteria (Lactobacillus. Acidophilus), and the like. Among them, Bacillus subtilis also works as an organic matter-degrading fermentation bacterium.

以下、本発明の実施例を詳細に説明する。実施例の家畜用敷料は、鶏糞を主原料とする鶏舎用敷料の例である。
図1は、実施例の処理工程の説明図である。
図2は、実施例の畜舎内の家畜用敷料のアンモニア臭抑止効果を示す説明図である。
図3は、実施例の使用した家畜用敷料中の分解発酵菌・有用菌と有害菌の菌体数の日齢変化を示す説明図である。
図4は、実施例の敷料を使用したときの肥育成績比較図である。
Hereinafter, embodiments of the present invention will be described in detail. The livestock bedding of the examples is an example of a poultry house bedding mainly made of chicken manure.
FIG. 1 is an explanatory diagram of processing steps of the embodiment.
FIG. 2 is an explanatory view showing the ammonia odor suppressing effect of the livestock bedding in the barn of the example.
FIG. 3 is an explanatory diagram showing changes in the number of cells of decomposing and fermenting bacteria / useful bacteria and harmful bacteria in the livestock litter used in the examples with age.
FIG. 4 is a fattening performance comparison chart when using the bedding of the example.

本実施例の家畜用敷料の製造工程を図1に示す。
(1) 殺菌工程
原料は、鶏糞を使用し、その鶏糞を加熱装置の加熱室(図示せず)に投入し、その内部に設けた撹拌羽根を回動して撹拌する。加熱室の外周はバーナー排気熱(加熱空気)で加熱され、又その排気熱は加熱室内にも導入され、直接加熱するようにしている。原料温度は90〜110℃程で少なくとも1時間以上撹拌される。これによって鶏糞中の雑菌・有害菌・病原菌を殺菌する。
(2) 分解発酵工程
次に、この加熱室に原料の糞尿中の有機物の分解発酵する分解発酵菌として、枯草菌(Bacillus.subtilis)、酵母菌(Sacchromyces.cerevisiae)、麹菌(Aspergillus.oryzae)を、又病原菌の増殖を抑止する有用菌として枯草菌(Bacillus.subtilis)、乳酸菌(Lactobacillus.acidophillus)を投入する。併せてキトサンとケイ酸(珪酸)水溶液を主成分とする分解発酵促進剤も投入する。投入して1時間程度撹拌混合する。その後加熱室内の間欠的撹拌と間欠的な送気を行って大略2日間程かけて発酵させる。キトサンとケイ酸(珪酸)水溶液を主成分とする分解発酵促進剤(水65重量%,キトサン10重量%,ケイ酸(珪酸)10重量%,竹酢20重量%配合)も投入することで、分解の促進とアンモニア臭の発生が抑止される。又鶏糞はこの工程で分解発酵して粉状となる。麹菌の分解発酵は乳酸菌によって強められる。
(3) 乾燥工程
発酵後に、撹拌羽根による撹拌をしながらバーナーで排気熱を送り込んで2時間程加熱して乾燥させる。水分は20%程となる。
The manufacturing process of the livestock litter of a present Example is shown in FIG.
(1) Sterilization process As a raw material, chicken droppings are used, and the chicken droppings are put into a heating chamber (not shown) of a heating device, and stirring blades provided in the inside are rotated and stirred. The outer periphery of the heating chamber is heated by burner exhaust heat (heated air), and the exhaust heat is also introduced into the heating chamber so as to be directly heated. The raw material temperature is about 90 to 110 ° C. and stirred for at least 1 hour. This sterilizes germs, harmful bacteria, and pathogenic bacteria in chicken manure.
(2) Decomposition and Fermentation Step Next, as decomposing and fermenting bacteria for decomposing and fermenting organic matter in manure of raw materials in this heating chamber, Bacillus subtilis, Saccharomyces. Cerevisiae, Aspergillus. Oryzae In addition, Bacillus subtilis and Lactobacillus acidophilus are introduced as useful bacteria for inhibiting the growth of pathogenic bacteria. In addition, a decomposition fermentation accelerator mainly composed of chitosan and silicic acid (silicic acid) aqueous solution is also introduced. Stir and mix for about 1 hour. Then, it is fermented over about two days with intermittent stirring and intermittent air feeding in the heating chamber. By introducing a decomposition fermentation accelerator mainly composed of chitosan and silicic acid (silicic acid) aqueous solution (65% by weight of water, 10% by weight of chitosan, 10% by weight of silicic acid (silicic acid), 20% by weight of bamboo vinegar), Promotion of decomposition and generation of ammonia odor are suppressed. In addition, chicken manure is decomposed and fermented in this process to become powder. The decomposition fermentation of Aspergillus is enhanced by lactic acid bacteria.
(3) Drying process After fermentation, heat is exhausted with a burner while stirring with a stirring blade and heated for about 2 hours to dry. The moisture is about 20%.

このように(1)〜(3)の工程は5日間の作業で実施例1の鶏糞利用の敷料ができる。この敷料は、水分は20%程で粉粒状のものとなっている。この鶏糞敷料を床敷材として敷いた試験区の鶏舎と、従来ののこくず牧草の敷料の対照区鶏舎に、ひなを入れて使用した場合の、鶏舎の敷料のアンモニア臭の発生状態を日齢とともに測定した。その測定結果を図2に示す。
図2から分かるように、アンモニア臭は、従来ののこくず、牧草と同等かそれ以上に抑えることができる。単に加熱乾燥させた畜糞を敷料とする場合では水分が加わると、敷料中の成分からアンモニア臭が発生することが発生していたが、この問題点は解消された。
Thus, the process of (1)-(3) can make the litter using the chicken manure of Example 1 by the operation | work for 5 days. This bedding is about 20% moisture and is granular. The state of generation of ammonia odor in chicken house bedding when used with chickens in the test house where the chicken manure was laid as a floor covering and the control house of conventional sawdust pasture. Measured with age. The measurement results are shown in FIG.
As can be seen from FIG. 2, the ammonia odor can be suppressed to a level equal to or higher than that of conventional sawdust and pasture. In the case of using heat-dried animal feces as a litter, when moisture was added, ammonia odor was generated from the components in the litter, but this problem was solved.

又、各区の鶏糞の中の微生物とその菌体数を測定した。その結果を図3に示している。これから分かるように、本実施例の敷料では、鶏舎の鶏糞に含まれる病原菌の大腸菌は日齢とともに大巾に低くなることが分かる。これは病原菌抑止の多数の有用菌による効果が発現したことを示している。尚試験区では他の雑多な菌が共存していることが分かる。図3の図中の数字は対数表示で、その下表の数値が個体数である。   In addition, the number of microorganisms and the number of cells in the chicken manure of each section were measured. The result is shown in FIG. As can be seen, in the litter of the present example, the pathogenic E. coli contained in the poultry manure of the poultry house decreases greatly with age. This shows that the effect by many useful bacteria of pathogen control was expressed. It can be seen that other miscellaneous bacteria coexist in the test area. The numbers in the figure of FIG. 3 are logarithmic representations, and the numbers in the table below are the number of individuals.

両区のひなの肥育成績を図4に示している。
図4から分かるように、肥育成績は、従来ののこくず・牧草の敷料との差異は僅かであるが、本実施例の方がやや優れていた。
本実施例の敷料は、鶏舎の鶏糞を使用するので原料費は不要であり、かつ廃棄物の鶏糞の有効利用となっている。
The fattening results of chicks in both wards are shown in FIG.
As can be seen from FIG. 4, the fattening results were slightly better in this example than the conventional sawdust / grass bedding.
Since the litter of the present embodiment uses chicken manure from the poultry house, the raw material cost is unnecessary, and waste chicken manure is effectively used.

本発明の家畜の畜糞による敷料製品は、敷料として使用しないときは、堆肥として使用したり、あるいは完熟させることにして、畜糞の廃棄処理に使える。   The litter product made of livestock excrement of livestock of the present invention can be used as a compost or used for disposal of livestock dung when not used as a litter.

実施例の処理工程の説明図である。It is explanatory drawing of the process process of an Example. 実施例の畜舎内家畜用敷料のアンモニア臭抑止効果を示す説明図である。It is explanatory drawing which shows the ammonia odor suppression effect of the litter for livestock in a barn of an Example. 実施例の使用した家畜用敷料中の分解発酵菌・有用菌と有害菌の菌体数の日齢変化を示す説明図である。It is explanatory drawing which shows the age-related change of the cell number of decomposition | disassembly fermentation bacteria, useful bacteria, and harmful bacteria in the litter for livestock used in the Example. 実施例の敷料を使用したときの肥育成績比較図である。It is a fattening result comparison figure when the litter of an Example is used.

Claims (6)

畜糞を主たる原料とし、同原料を撹拌しながら高温で加熱して殺菌処理し、その後有機物の分解発酵菌と家畜の病原菌を抑止する有用菌とを投入し、撹拌しながら畜糞の有機成分を分解発酵させるとともに、家畜の病原菌を抑止する有用菌を増殖させ、その後粉粒状に乾燥させて製造する、家畜用敷料。   The main raw material is animal dung, which is heated at high temperature while stirring the raw material, then sterilized by decomposing and fermenting organic matter, and useful bacteria that suppress livestock pathogens, and decomposing the organic components of animal dung while stirring A livestock litter produced by fermenting and producing useful bacteria that suppress pathogenic bacteria in livestock and then drying them into powder. 殺菌処理が、90〜110℃で1〜2時間以上持続させて行うものである、請求項1記載の家畜用敷料。   The livestock litter according to claim 1, wherein the sterilization treatment is performed at 90 to 110 ° C for 1 to 2 hours or longer. 有用菌が枯草菌・乳酸菌のいずれかを含むか又はその組み合わせの菌である、請求項1又は2記載の家畜用敷料。   The livestock litter according to claim 1 or 2, wherein the useful bacteria include any of Bacillus subtilis and lactic acid bacteria, or a combination thereof. 発酵させるときに、キトサンとケイ酸水溶液とを主成分とする分解促進剤を撹拌されている原料に混入させる、請求項1〜3記載の家畜用敷料。   The livestock litter according to claims 1 to 3, wherein a decomposition accelerator comprising chitosan and a silicic acid aqueous solution as main components is mixed with the stirred raw material when fermenting. おがくず又は牧草等の使用済み敷料を家畜の畜糞の原料に混入して一緒に分解発酵させる、請求項1〜4いずれか記載の家畜用敷料。   The livestock litter according to any one of claims 1 to 4, wherein spent litter such as sawdust or pasture is mixed with raw material for livestock dung and is decomposed and fermented together. 請求項1〜5いずれかで製造された家畜用敷料を畜舎で実際に敷料として使用し、その使用された敷料とその上に積もった家畜の糞とを原料とし、同原料を撹拌しながら高温で加熱して殺菌処理し、その後撹拌しながら畜糞の有機成分を分解発酵させるとともに家畜の病原菌を抑止する有用菌を有機物の分解発酵菌と家畜の病原菌を抑止する有用菌とを投入し、撹拌しながら畜糞の有機成分を分解発酵させるとともに、家畜の病原菌を抑止する有用菌を増殖させ、その後粉粒状に乾燥させて家畜用敷料として再利用する、家畜用敷料のリサイクル使用方法。   The livestock litter produced in any one of claims 1 to 5 is actually used as a litter in a barn, and the litter used and the livestock dung piled on it are used as raw materials, and the raw materials are stirred at a high temperature. Sterilize by heating, and then stir the organic components of livestock feces while stirring and add the useful bacteria that suppress the pathogenic bacteria of livestock and the useful bacteria that suppress the organic pathogenic fungi and the pathogenic bacteria of the livestock While recycling and fermenting the organic components of livestock excrement, a method for recycling livestock litter is used, in which useful bacteria that suppress pathogenic bacteria in livestock are propagated, and then dried into powder and reused as livestock litter.
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CN101953309A (en) * 2010-09-16 2011-01-26 四川省杨森乳业有限责任公司 Method for feeding dairy cows by using micro-ecological fermentation bed
CN102531721A (en) * 2012-01-20 2012-07-04 凤阳县大明农牧科技发展有限公司 Production method of recycling-type fermentation bedding material and beef cattle raising technique
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US9445604B2 (en) 2013-09-16 2016-09-20 Asahi Calpis Wellness Co., Ltd. Method for sterilizing domestic animal litter by microorganism
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Publication number Priority date Publication date Assignee Title
CN101953309A (en) * 2010-09-16 2011-01-26 四川省杨森乳业有限责任公司 Method for feeding dairy cows by using micro-ecological fermentation bed
CN101953309B (en) * 2010-09-16 2012-01-18 四川省杨森乳业有限责任公司 Method for feeding dairy cows by using micro-ecological fermentation bed
CN102531721A (en) * 2012-01-20 2012-07-04 凤阳县大明农牧科技发展有限公司 Production method of recycling-type fermentation bedding material and beef cattle raising technique
CN102783455A (en) * 2012-08-17 2012-11-21 沭阳县银丰农业开发有限公司 Ecological pig farming method using microbial padding
US9445604B2 (en) 2013-09-16 2016-09-20 Asahi Calpis Wellness Co., Ltd. Method for sterilizing domestic animal litter by microorganism
US10017730B2 (en) 2013-09-16 2018-07-10 Asahi Calpis Wellness Co., Ltd. Composting accelerators for organic waste or livestock bedding
WO2015125795A1 (en) * 2014-02-19 2015-08-27 三井造船株式会社 Methane fermentation method and methane fermentation system
CN105010154A (en) * 2015-07-07 2015-11-04 青岛嘉瑞生物技术有限公司 Process for preparing fermentation mattress material through resource utilization of sheep manure
CN110506700A (en) * 2018-05-22 2019-11-29 兴业县智宇农牧设备有限公司 A kind of pig cultural method of environment-friendly high-efficiency near-zero release mode
JP2021036839A (en) * 2019-09-05 2021-03-11 倉敷紡績株式会社 Bedding reproducer
JP7304777B2 (en) 2019-09-05 2023-07-07 倉敷紡績株式会社 Litter regeneration device and litter regeneration method
CN114027217A (en) * 2021-11-11 2022-02-11 易飞特河南生物技术开发有限公司 Chicken farm padding manufacturing and using method thereof
CN114145232A (en) * 2021-12-01 2022-03-08 防城港宏飞农牧有限公司 Method for modification, upgrade and environment optimization of ecological breeding barns of large-scale cattle farms

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