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卵泡刺激ホルモンの超刺激がホルシュタイン牛の行動とパフォーマンスに与える影響
Muhammad Abdullah1, Muhammad Faheem Ullah1, Muhammad Kamran Ashraf1
1Department of Theriogenology, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan.
The Journal of dairy research
|September 1, 2025
まとめ
ホルシュタイン牛の卵泡刺激ホルモン (FSH) 過剰刺激により,卵泡数が増加したが,動物の行動,体温,乳分量には影響はなかった. これは,FSHが牛の福祉や生産性を損なうことなく,卵泡の動態を高めることを示唆しています.
科学分野:
- 家畜における生殖内分泌学
- 乳牛の管理
背景:
- 乳牛の生殖能力を高めるための超刺激プロトコルです
- 卵泡刺激ホルモン (FSH) が卵泡動力学と牛の性能に与える影響を理解することは,繁殖プログラムを最適化するために極めて重要です.
研究 の 目的:
- 卵泡動力学,動物の行動,体表面温度,およびホルシュタイン牛の乳量に対するFSH超刺激の効果を調査する.
- FSHの投与がエストラサイクル同期と卵泡発育に影響するかどうかを判断する.
主な方法:
- ホルシュタイン牛は同期され,塩水 (CON) または500 IUのFSHで治療された.
- 卵泡動態は0日から5日まで超音波で観察された.
- 動物の行動 (活動,餌) は,SmartTag Neckを用いて記録された.
- 身体表面の温度を赤外線画像を用いて測定した.
- 牛乳の生産量は毎日記録された.
主要な成果:
- FSH治療は,対照群と比較して,大きく,全体的な卵泡の数が著しく高かった (P=0. 01).
- FSH治療群と対照群の間で,小胞子と中胞子数の有意な差は認められなかった.
- FSHの投与は,牛の活動,餌の時間,体温,乳の出産に影響を与えなかった.
結論:
- FSHの超刺激は,ホルシュタイン牛の大きな卵泡の数を効果的に増加させます.
- 牛の行動や体温や牛乳の生産に悪影響を及ぼさなかった.
- 乳牛の福祉やパフォーマンスを損なうことなく,卵泡動態を改善する可能性を示しています.
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