JP2020509743A - 飼料添加物製剤ならびにその製造方法および使用方法 - Google Patents
飼料添加物製剤ならびにその製造方法および使用方法 Download PDFInfo
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Abstract
Description
本出願は2017年3月7日に出願された米国仮特許出願第62/467,848号の優先権を主張し、その全内容は、参照により本明細書に組み込まれる。
本開示の主題は、概して、飼料添加物製剤、ならびに本開示の製剤を製造および使用する方法に関する。
in vitroにおけるバチルス・リケニフォルミス株PWD−1のプロバイオティクス特性の評価
バチルス・リケニフォルミス株PWD−1を、一連の寒天ウェル拡散アッセイを介して、病原体サロゲート(pathogen surrogate)である大腸菌(E. coli)、サルモネラ・エンテリカ(Salmonella enterica)、リステリア・イノキュア(Listeria innocua)、およびカンピロバクター・ハイオインテスティナリス(Campylobacter hyointestinalis)に対して試験した。各アッセイにおいて、病原体サロゲートの1つを3つの寒天プレート上に広げ、バチルス・リケニフォルミス株PWD−1を各プレートのウェル内に入れた。次いで、これらのプレートを37℃で一晩インキュベートした。そして写真撮影を行い、病原体とバチルス・リケニフォルミスとの相互作用を示した。
in vitroにおけるバチルス・アミロリケファシエンス株Ba−BPD1のプロバイオティクス特性の評価
バチルス・リケニフォルミス株PWD−1の代わりにバチルス・アミロリケファシエンス株Ba−BPD1を用いて、実施例1の実験を繰り返した。
バチルス・リケニフォルミス株PWD−1およびバチルス・アミロリケファシエンス株Ba−BPD1の耐酸性試験
酸性環境に対するプロバイオティクス微生物の耐性は、腸内を通過する前に動物の腸内に存在する過酷な酸性条件にプロバイオティックが暴露されるため、重要な特徴である。バチルス・リケニフォルミス株PWD−1を、0、1、2、および3時間の時点で、pH3.0でLB培地に供した。次いで、培地をpH7.0に中和し、そして増殖を600nmでの吸光度において観察した。バチルス・アミロリケファシエンス株Ba−BPD1について実験を繰り返した。
バチルス・リケニフォルミス株PWD−1およびバチルス・アミロリケファシエンス株Ba−BPD1の胆汁耐性試験
胃環境におけるプロバイオティクス微生物の生存には、低pH環境だけでなく、胃腸管に分泌される酵素も含まれる。伝統的に、雄牛の胆汁(アルコールと混合された雌牛の胆汁)は、胃環境の代表として使用されてきた。バチルス・リケニフォルミス株PWD−1を、LB培地中0.3%雄牛の胆汁に0、1、2、または3時間暴露し、図4aに示すように、600nmでの吸光度において8時間増殖を観察した。図4bに示すように、バチルス・アミロリケファシエンス株Ba−BPD1について実験を繰り返した。
バチルス・リケニフォルミス株PWD−1およびバチルス・アミロリケファシエンス株Ba−BPD1の腸粘膜への接着
腸粘液へのプロバイオティック株の付着は、粘液内層への病原体の接近を制限するので望ましい。バチルス・リケニフォルミス株PWD−1およびバチルス・アミロリケファシエンス株Ba−BPD1を試験し、豚粘液への付着能を評価した。対照としてATCCからのバチルス・サブチルス株168−aおよびバチルス・サブチルス株C102(Calsporin)も試験した。タンパク質コーティング(緩衝液のみ)およびBSA(ウシ血清アルブミン)は、対照として使用しなかった。図5に示すように、各株の増殖を観察したところ、バチルス・リケニフォルミス株PWD−1は、バチルス・サブチルス株C102に匹敵する水準で豚粘液に付着していることが示された。
市販ブロイラーへのキシラナーゼおよびバチルス・リケニフォルミス株PWD−1の添加の効果の研究
対象:日齢、混合性別、Ross708ブロイラー。
キシラナーゼ、バチルス・リケニフォルミス株PWD−1、およびバチルス・アミロリケファシエンス株Ba−BPD1の市販ブロイラーへの添加の効果の研究
対象:日齢、混合性別、Ross708ブロイラー。
重度のコクシジウム症接種条件下での市販ブロイラーの食餌へのキシラナーゼ、バチルス・リケニフォルミスPWD−1、およびアミロリケファシエンス株Ba−BPD1の添加の効果
本研究の目的は、消化管病変の重症度を最小限に抑え、標準的なトウモロコシ/大豆食餌を与えられかつ重度のコクシジウム症接種条件下で飼育したブロイラーの全生存率を増進するために、キシラナーゼ(10U/g(飼料))、バチルス・リケニフォルミス株PWD−1(1×105CFU/g(飼料))、およびバチルス・アミロリケファシエンス株Ba−BPD1(5×105CFU/g(飼料))の組合せの100g/メートルトン含有の有効性を評価することであった。
Claims (28)
- 単離されたキシラナーゼ酵素と、バチルス・リケニフォルミス株PWD−1(アクセッション番号53757)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物とを含む、単胃動物飼料用の飼料添加物製剤。
- バチルス・アミロリケファシエンス株Ba−BPD1(アクセッション番号DSM21836)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物をさらに含む、請求項1に記載の飼料添加物製剤。
- 前記キシラナーゼがエンド−1,4−β−キシラナーゼである、請求項1に記載の飼料添加物製剤。
- 前記製剤が、固体、粉末、懸濁濃縮物、液体、または顆粒である、請求項1に記載の飼料添加物製剤。
- 担体をさらに含む、請求項1に記載の飼料添加物製剤。
- 前記担体が石灰石を含む、請求項5に記載の飼料添加物製剤。
- 前記キシラナーゼが10,000〜200,000単位/グラムの範囲であり、バチルス・リケニフォルミスが108〜1012CFU/グラムの範囲である、請求項1に記載の飼料添加物製剤。
- 前記キシラナーゼが10,000〜200,000単位/グラムの範囲であり、バチルス・リケニフォルミスが108〜1012CFU/グラムの範囲であり、バチルス・アミロリケファシエンスが108〜1012CFU/グラムの範囲である、請求項2に記載の飼料添加物製剤。
- 請求項1に記載の飼料添加物製剤を含む、単胃動物用飼料組成物。
- バチルス・アミロリケファシエンス株Ba−BPD1(アクセッション番号DSM21836)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物をさらに含む、請求項9に記載の飼料組成物。
- 前記キシラナーゼが5〜30単位/グラム(飼料)の範囲であり、バチルス・リケニフォルミスが少なくとも5×104CFU/グラム(飼料)の範囲である、請求項9に記載の飼料組成物。
- 前記キシラナーゼが5〜30単位/グラム(飼料)の範囲であり、バチルス・リケニフォルミスおよびバチルス・アミロリケファシエンスの各々が少なくとも105CFU/グラム(飼料)の範囲であり、総量が少なくとも1×105CFU/グラム(飼料)である、請求項10に記載の飼料組成物。
- 単胃動物の能力を向上させる方法であって、キシラナーゼ酵素と、バチルス・リケニフォルミス株PWD−1(アクセッション番号53757)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物とを含む飼料組成物の有効量を、単胃動物に投与することを含む、方法。
- 前記飼料組成物が、バチルス・アミロリケファシエンス株Ba−BPD1(アクセッション番号DSM21836)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物をさらに含む、請求項13に記載の方法。
- 前記キシラナーゼがエンド−1,4−β−キシラナーゼである、請求項13に記載の方法。
- 前記動物が家禽である、請求項13に記載の方法。
- 前記動物がブロイラーである、請求項16に記載の方法。
- 前記動物がブタである、請求項13に記載の方法。
- 能力の向上が、1日平均体重増加量の増加、総体重増加量の増加、飼料転換率の増進、病変スコアの減少、死亡率の減少、疾患の減少、および病原体発生率の減少の1つまたはこれらの組合せを含む、請求項13に記載の方法。
- 前記疾患および病変スコアの一方または両方が、クロストリジウム・パーフリンジェンス、アイメリア・アセルブリナ、アイメリア・マキシマ、アイメリア・テネラおよびコクシジウム症誘発寄生虫の1つまたはこれらの組合せの結果である、請求項19に記載の方法。
- 前記動物が家禽であり、
能力の向上が、クロストリジウム・パーフリンジェンスおよびアイメリア属の1つまたはこれらの組合せから生じる病変スコアの減少を含む、請求項19に記載の方法。 - 前記動物が家禽であり、
病原体発生率の減少がサルモネラ発生率の減少である、請求項19に記載の方法。 - キシラナーゼ酵素と、バチルス・リケニフォルミス株PWD−1(アクセッション番号53757)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物とを含む製剤を飼料組成物に添加することを含む、単胃動物用飼料組成物を調製する方法。
- 前記製剤が、バチルス・アミロリケファシエンス株Ba−BPD1(アクセッション番号DSM21836)またはその同定特性をすべて有するその変異体の生物学的に純粋な培養物をさらに含む、請求項23に記載の方法。
- 前記キシラナーゼがエンド−1,4−β−キシラナーゼである、請求項23に記載の方法。
- 前記製剤が、固体、粉末、懸濁濃縮物、液体、または顆粒である、請求項23に記載の方法。
- 前記キシラナーゼが5〜30単位/グラム(飼料)の範囲であり、バチルス・リケニフォルミスが少なくとも5×104CFU/グラム(飼料)の範囲である、請求項23に記載の方法。
- 前記キシラナーゼが5〜30単位/グラム(飼料)の範囲であり、バチルス・リケニフォルミスおよびバチルス・アミロリケファシエンスの各々が少なくとも105CFU/グラム(飼料)の範囲であり、総量が少なくとも1×105CFU/グラム(飼料)である、請求項24に記載の方法。
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