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乳头细菌群体与奶牛乳脂之间的关系

Boxue Si^1,2, Kaizhen Liu^1,2,3, Guoxin Huang^1,2

¹State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.

Frontiers in microbiology

|October 27, 2023

概括

乳液细菌会影响奶牛的牛奶脂肪含量. 特定的细菌系,如Prevotellaceae和Ruminococcus,与较高的牛奶脂肪百分比和脂肪酸概况有关.

科学领域:

动物科学动物科学
微生物学微生物学
营养科学营养科学

背景情况:

牛奶的脂肪含量是高度可变的,受到饮食和肠道微生物群的影响.
乳液细菌在营养代谢中起着至关重要的作用,并且越来越多地被认为对牛奶成分的影响.
了解肠微生物群与牛奶脂肪酸 (FA) 之间的关系对于人类健康和乳制品生产至关重要.

研究的目的:

对荷尔斯坦乳牛的乳头细菌组成和牛奶脂肪百分比之间的关联进行调查.
为了识别与高和低乳脂产量的相关的特定菌细菌属.
为了探索关键的肠细菌和特定的牛奶脂肪酸之间的关系.

主要方法:

选择了45头荷尔斯坦牛,根据牛奶脂肪百分比分为高乳脂 (HF) 和低乳脂 (LF) 组.
在为期两周的实验期内采集了液和生牛奶样本.
利用16S rRNA基因测序用于肠细菌分析和斯皮尔曼等级相关性用于统计分析.

主要成果:

与LF组相比,HF组的奶牛的牛奶脂肪百分比和乳头细菌丰富度显著更高,与LF组相比.
在HF组中,包括*Prevotellaceae_UCG-001*,*Candidatus_Saccharimonas*和*Ruminococcus*_1在内的特定属的数量明显更多.
*Prevotellaceae_UCG-001*, *Ruminococcus*_1, *Lachnospiraceae_AC2044_group*, 和 *U29-B03* 显示了与牛奶脂肪百分比和特定FA的正相关性.

结论:

乳液细菌成分与奶牛的牛奶脂肪变化有显著的关系.
某些乳头细菌属,如Prevotellaceae和Ruminococcus,可能会影响牛奶中特定脂肪酸的沉积.
这些发现凸显了向乳头微生物群的潜力,以调节牛奶脂肪含量和质量.

关键词:

16S rRNA 基因测序的基因测序脂肪酸组成脂肪酸组成关键的细菌是关键的细菌牛奶的脂肪和牛奶的脂肪.牛皮的细菌是牛皮的细菌.

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