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Updated: Sep 10, 2025

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オブシンクとダブルオブシンクプロトコルの比較評価,ホルシュタイン乳牛の単一および二重受精:生殖性能とコスト分析
Daniel Ionut Berean1, Liviu Marian Bogdan1, Raluca Cimpean2
1Department of Reproduction, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Manastur 3-5, 400372 Cluj-Napoca, Romania.
Animals : an open access journal from MDPI
|August 28, 2025
まとめ
単一の人工授精 (AI) によるダブル・オブシンクは,乳牛にとって最高の生殖と経済的な結果をもたらします. このプロトコルは,この研究で妊娠率が最も高く,妊娠あたりのコストが最も低かった.
科学分野:
- 獣医学
- 動物の繁殖
- 乳牛の群れ管理
背景:
- エストルス同期プロトコルは乳牛の効率的な生殖管理に不可欠です.
- これらのプロトコルを最適化することで 生殖効率と経済性のバランスをとることができます
研究 の 目的:
- 多卵性ホルシュタイン乳牛の4つの雌性同期プロトコルの生殖と経済的パフォーマンスを比較する.
- 定時人工授精 (AI) の最も効果的で費用対効果の高いプロトコルを特定する.
主な方法:
- 4つのエストル同期プロトコルが評価された:Ovsynch (1つまたは2つのAI) とDouble Ovsynch (1つまたは2つのAI).
- 216頭のホルシュタイン牛をランダムに治療グループに分けました (それぞれn=54).
- 妊娠の診断は受精後33日経由の超音波検査で行われた.
主要な成果:
- 単一のAIを用いたダブルオブシンチプロトコルは,妊娠率が最も高い結果 (64. 8%) を出した.
- このプロトコルは,妊娠確認毎の最低コスト (89.51ユーロ) を示した.
- 一人のAIを使った標準的なOvsynchプロトコルは,最も低い受精率 (42.6%) を示した.
結論:
- 単一のAIでダブルオブシンクは,集中管理された乳牛の妊娠率を改善するための最も効果的なプロトコルです.
- このプロトコルは,乳牛の繁殖管理の最も経済的に有効な選択肢です.
- 標準的なOvsynchプロトコルは,固定時間AI条件下で有効性が制限されている可能性があります.
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