レッドクローバーイソフラボンの乳育性能,牛乳品質,牛乳牛の窒素代謝への影響
Zhanbo Xiong1, Xiaoyin Zhang1, Shiqi Zhang1
1State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Animal nutrition (Zhongguo xu mu shou yi xue hui)
|September 2, 2025
まとめ
レッドクローバー抽出物 (RCE) のサプリメントは乳牛の乳分と飼料の効率を改善しました. RCEは窒素の利用と乳成分の収穫を向上させ,窒素の排泄を減らし,生産と環境の両方に利益を示しました.
科学分野:
- 動物科学
- 栄養学的生化学
- 乳牛の生産
背景:
- 乳牛の窒素の損失を削減し,窒素の利用効率を向上させることは,経済的生存と環境の持続可能性にとって極めて重要です.
- レッドクローバーのイソフラボンは 植物由来の化合物で 窒素代謝を改善する 生物学的に安全な方法です
研究 の 目的:
- レッドクローバー抽出物 (RCE) 補給が乳育能力と乳牛の窒素代謝に与える影響を調査する.
- 牛乳の生産と窒素の利用を改善するために最適なRCEの投与量を決定する.
主な方法:
- 68頭のホルシュタイン牛はランダムに割り当てられ,84日間,RCEを0,2,4,または8g/kgの総混合給 (TMR) で補給された食事を与えられました.
- 哺乳の性能,乳成分の産量,窒素代謝指標 (微生物窒素,尿中の窒素,乳尿素窒素),栄養素の消化性を測定した.
- メタボノミクス分析は,基礎となる代謝変化を調査するために使用されました.
主要な成果:
- RCEの補給で乳産量と飼料効率が二次的に増加し,2g/kgで最適な結果が得られました.
- RCEは 牛乳脂肪,タンパク質,乳糖,および 固体の総分を 大幅に増加させた.
- 窒素利用効率は線形的に増加し,尿中の総窒素と乳尿素の窒素は二次的に減少した.
- 乾物,有機物,中性洗剤繊維の表面的消化性は二次的に改善され,最高値は2g/kgRCEでした.
結論:
- レッドクローバー抽出物の補給は,特に2〜4g/kg DMで,乳搾りの性能,牛乳の品質,そして牛乳牛の窒素代謝を効果的に改善します.
- RCEは乳牛の生産性を向上させ 環境への窒素排出量を削減するための有望な戦略です
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