在断奶前养霍尔斯泰因小牛的同生菌补充剂增加了它们的能量校正的牛奶产量,因为作为哺乳母牛,它们的产量增加了
M M Muhffel1, S S Aly2, P M Lucey3
1Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California Davis, Tulare, CA 93274.
Journal of dairy science
|February 6, 2026
概括
在断奶前补充Holstein小牛的协生菌 (SYN) 显著增加了三次哺乳期的乳脂和能量校正乳 (ECM) 产量. 这种料添加剂战略显示出提高奶牛生产率的前景.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 肠道微生物组调制 肠道微生物组调制
背景情况:
- 益生菌和益生菌是影响肠道微生物组合和功能的料添加剂.
- 肠道健康对于动物的消化,免疫力和整体健康至关重要.
- 在生命早期调节肠道微生物群可能会影响长期的动物生产力.
研究的目的:
- 评估益生菌,益生菌或协生菌对霍尔斯坦小牛的后续奶产的影响.
- 评估断奶前料添加剂补充对奶牛表现的长期影响.
主要方法:
- 追溯分析了1296头荷尔斯坦牛的牛奶产量记录.
- 奶牛接受了四种断奶前治疗之一:控制,益生菌,益生菌或共生菌.
- 用混合效应回归模型计算了三个哺乳期的每月测试日记录,计算了能量校正牛奶 (ECM) 产量.
主要成果:
- 与对照组相比,同生菌补充剂的每日ECM产量增加了1.00公斤/天.
- 这一增长主要归因于牛奶脂肪产量较高 (0.048公斤/天更多的脂肪).
- 在对照组,益生菌组或益生菌组之间没有观察到ECM产量的显著差异.
结论:
- 在断奶前期补充荷尔斯坦小牛的协生菌可以提高牛奶和牛奶脂肪的产量.
- 同生菌补充剂在前三次哺乳期对能量校正的牛奶产量产生积极影响.
- 在生命早期通过协生菌对肠道微生物组进行有针对性的调制,为提高奶牛生产率提供了一个可行的策略.
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