用精油混合物补充饮食:对肠道甲排放的影响,明显的全道营养消化能力,利用率和哺乳性能的影响
1Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, Sherbrooke, QC J1M 0C8 Canada.
Journal of dairy science
|January 9, 2025
概括
用精油补充奶牛并没有改善牛奶的产量,营养的使用,或减少甲排放. 需要进一步的研究来确定最佳剂量和与饮食的相互作用,以获得潜在的益处.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 环境科学 环境科学
背景情况:
- 奶牛的肠道甲 (CH4) 排放有助于温室气体的排放.
- 精油补充作为减轻CH4和提高奶牛表现的策略被探索.
- 了解特定精油混合物对营养利用和哺乳效率的影响至关重要.
研究的目的:
- 为了评估一种特定的精油混合物 (Agolin) 对哺乳乳奶牛肠道CH4排放的影响.
- 评估精油补充剂对全道营养物质明显消化能力和利用量的影响.
- 确定对哺乳期表现的影响,包括牛奶产量,成分和效率.
主要方法:
- 32只多胎母乳母牛被分配给一个随机的完整块设计.
- 治疗包括基本饮食与安慰剂 (对照) 或基本饮食补充1g/牛/天精油混合物.
- 测量包括干物质摄入量,营养物质消化能力,平衡,牛奶产量和成分,以及10周内肠道CH4排放.
主要成果:
- 精油补充剂没有显著改变干物质摄入量,明显的全道营养消化能力或平衡.
- 牛奶产量,4%脂肪校正牛奶 (FCM) 和能量校正牛奶 (ECM) 没有受到治疗的影响.
- 肠道CH4产量,产量和强度保持不变,料效率和牛奶中使用效率也保持不变.
结论:
- 补充哺乳乳奶牛每天1克这种精油混合物并没有提高哺乳性能,营养消化能力,利用率,也没有减少肠道CH4排放.
- 在本研究的条件下,测试剂量和特定的精油成分可能无法有效.
- 需要进一步的研究来确定最佳剂量,并了解与基础饮食的潜在相互作用,以提高疗效.
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