プロピレン・グリコールまたはサクラロースの乳房経口投与による乳房経口,血液および肝臓のパラメータへの影響
Kyoko Chisato1, Rika Fukumori1, Ryo Imaishi1
1Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan.
Animal science journal = Nihon chikusan Gakkaiho
|September 3, 2025
まとめ
プロピレングリコール (PG) は,サクラロース (SC) と異なり,牛の血中の非エステリ化脂肪酸 (NEFA) の上昇を効果的に減少させた. この発見は,乳牛の代謝ストレスを管理することによって,産後疾患を予防するために極めて重要です.
科学分野:
- 獣医学
- 動物の栄養
- 代謝疾患の研究
背景:
- 産前における血中非精製脂肪酸 (NEFA) の上昇は,乳牛の産後疾患のリスクの増加と関連しています.
- 代謝の健康管理は 乳牛の病気予防に不可欠です
研究 の 目的:
- 血中NEFA値の上昇を緩和するプロピレングリコール (PG) またはサクラロース (SC) の有効性を調査する.
- 脂質注入を受けた牛の主要な代謝指標に対するPGとSCの影響を評価する.
主な方法:
- 4x4 ラテン・スクエア・デザインの研究で,乳育期でない,妊娠期でない4頭のホルシュタイン牛が rumen cannula を使った.
- 治療には,水,PG,またはSCを併用した静脈内塩溶液または脂質注入が含まれていました.
- NEFA,グルコース,インスリン,ベータ・ヒドロキシブチラート (BHBA),および揮発性脂肪酸を測定するために血液と歯のサンプルを採取した.
主要な成果:
- 静脈内リンパ注入により,血液中のNEFA濃度が大幅に上昇した.
- プロピレングリコール (PG) の投与は,対照群 (L+WT) と比較して,低いNEFAをもたらした.
- 肝臓のCPT1mRNA発現の増加とともに,血糖とインスリン,およびBHBAの上昇も引き起こした.
結論:
- 牛の血中NEFA濃度の上昇を減らすのに,SCよりも効果的です.
- PGの有効性は,インスリン分泌の持続的な刺激に起因する可能性があります.
- これらの発見は,代謝ストレス管理と乳牛の産後疾患の予防のための戦略を提供します.
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