在奶牛中补充素的哺乳性能和血液学影响:一个元分析
D E Wasson1, L F Martins1, E H Wall2
1Department of Animal Science, The Pennsylvania State University, University Park, PA 16802.
Journal of dairy science
|September 22, 2024
概括
素 (CAP) 补充改善了奶牛的哺乳性能,增加了牛奶产量和料效率. 这种食补充剂还增加了牛奶脂肪含量和产量,这表明它对奶牛的新陈代谢有积极影响.
科学领域:
- 动物科学动物科学
- 营养生理学 营养生理学
- 乳牛生产 乳牛生产
背景情况:
- 中的性化合物素 (CAP) 在动物农业中被探索其潜在的益处.
- 了解农业政策对奶牛的影响对于优化牛奶生产和动物健康至关重要.
- 之前的研究表明,农业农业政策的影响各不相同,需要进行全面分析.
研究的目的:
- 进行对素补充剂对乳性能和乳牛血液参数的影响的元分析.
- 评估农业农业政策,生产挑战和剂量对乳牛关键指标的影响.
- 识别 CAP 影响奶牛生理学的潜在机制.
主要方法:
- 2011年至2024年间发表的11项同行评审研究的元分析.
- 利用随机和混合效应模型来分析数据,将 CAP,挑战类型和剂量作为变量.
- 对干物摄入量 (DMI),牛奶产量 (MY),能量校正牛奶 (ECM) 产量,料效率 (FE),牛奶成分,体重 (BW) 和血液学参数的评估影响.
主要成果:
- 补充CAP增加了2.9%的牛奶产量和3.4%的料效率.
- 牛奶脂肪度和产量分别增加了2.6%和4.0%,使用CAP.
- CAP补充剂降低了2.5%的血糖,但没有影响胰岛素水平.
结论:
- 素补充剂对乳牛的哺乳性能产生积极影响,特别是乳脂产量.
- CAP可能通过改变葡萄糖代谢来调节宿主生理,尽管需要进一步的机制研究.
- 补充"共同农业政策"有望提高奶牛的生产力,并有可能应对新陈代谢挑战.
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