干旱期的长度与自动挤奶系统,乳腺炎和牛的生殖指标的关联
Vigilijus Jukna1, Edita Meškinytė1, Ramūnas Antanaitis2
1Agriculture Academy, Vytautas Magnus University, Universiteto St. 10A, Akademija, LT-53361 Kaunas, Lithuania.
Animals : an open access journal from MDPI
|July 27, 2024
概括
奶牛40-70天的干旱期 (DP) 优化了奶牛的产量和乳腺健康. 较短的DP提高了受孕率,突出了DP管理的可持续奶牛养殖.
科学领域:
- 乳制品科学 乳制品科学
- 动物养殖 动物养殖
- 兽医医学 兽医医学 兽医医学
背景情况:
- 干旱期 (DP) 管理对于奶牛的健康和生产率至关重要.
- 自动挤奶系统 (AMS) 提供了对DP效应的新见解.
- 优化DP长度可以平衡生产,生殖和乳腺健康.
研究的目的:
- 评估干旱期 (DP) 长度对使用AMS管理的奶牛的牛奶产量,乳液健康和生殖效率的影响.
- 在AMS环境中确定乳牛的最佳DP持续时间.
主要方法:
- 对3861头牛的记录进行分析.
- 奶牛被分为三个DP组:<40天,40-70天和>70天.
- 评估牛奶产量,成分 (乳糖,脂肪与蛋白质的比例),电导率和受孕率.
主要成果:
- 具有40-70天DP的奶牛产奶量显著增加 (8.2公斤与<40天相比;5.0公斤与>70天).
- 40-70天DP组显示乳糖度最高,牛奶电导率最低,这表明乳腺健康状况更好.
- 最短的DP (<40天) 导致最高的受孕率.
结论:
- 40至70天的干旱期 (DP) 似乎是最大限度地提高奶产和改善AMS管理的奶牛的乳房健康的最佳选择.
- 虽然较短的DP (<40天) 提高了受孕率,但平衡的DP是整体群体可持续性的关键.
- 战略DP管理对于高效和可持续的乳牛群运营至关重要.
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