鲁米纳酸盐输液和饮食发酵性之间的相互作用对乳牛的乳脂生产的影响
Natalie L Urrutia1, Camila Muñoz1, Emilio M Ungerfeld2
1Centro Regional de Investigación Remehue, Instituto de Investigaciones Agropecuarias, Osorno 5290000, Región de Los Lagos, Chile.
Animals : an open access journal from MDPI
|July 12, 2025
概括
乙补充剂减少了奶牛DMI和牛奶产量,但增加了牛奶脂肪度. 这表明酸盐的可用性可以限制乳腺脂质生成,即使有足够的食纤维.
科学领域:
- 食动物的营养
- 动物代谢 动物代谢
- 乳制品科学 乳制品科学
背景情况:
- 乙酸对于反动物的能量和牛奶脂肪合成至关重要.
- 了解酸盐在乳脂合成中的作用对于奶牛管理至关重要.
研究的目的:
- 评估饮食发酵性和酸盐补充剂对奶牛哺乳的影响.
- 研究饮食发酵性和酸盐供应对牛奶生产和牛奶成分的相互作用.
主要方法:
- 在一个交叉设计中,使用了八只经过小吃管的欧洲霍尔斯坦牛.
- 饮食在发酵能力上有所不同 (高低),有或没有小肠酸输液.
- 分析了关键性能变量,血代谢物和牛奶成分.
主要成果:
- 乙注入减少了干物质摄入量,牛奶产量和牛奶蛋白产量/含量.
- 随着酸盐补充,牛奶脂肪度增加,特别是在高发酵性饮食中.
- 血β-基酸和非化脂肪酸表明了代谢转变,可能是由于摄入量减少.
结论:
- 乙的可用性可以限制奶牛的乳腺脂质生成.
- 食纤维的充足程度并不能否定酸作为牛奶脂肪合成的限制因素的潜力.
- 对酸盐代谢和饮食相互作用的进一步研究是有必要的.
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