饮食中的源和缓冲剂能否改变哺乳期奶牛的小菌群组成和发酵?
Richard R Lobo1, Jose A Arce-Cordero1,2, Bruna C Agustinho3
1Department of Animal Sciences, University of Florida, Gainesville, FL 32608, USA.
Journal of animal science
|June 23, 2023
概括
这项研究发现,虽然-氧化增加了小乳糖,但饮食缓冲剂改善了奶牛的营养消化能力. 在发酵或微生物群中,没有观察到源和缓冲剂使用之间的相互作用.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 微生物学 微生物学
背景情况:
- 氧化 (MgO) 是一种常见的补充剂.
- 探索替代源对于牲畜营养至关重要.
- 了解不同源和缓冲剂对乳头功能的影响是必不可少的.
研究的目的:
- 评估两种源 (MgO和-氧化) 和缓冲剂在哺乳乳奶牛中对食动物微生物群,发酵和营养消化能力的影响.
- 为了研究源和缓冲补充剂之间的潜在相互作用.
主要方法:
- 一个2x2的因数设计研究,对20只哺乳期的霍尔斯坦牛进行了研究.
- 治疗方法包括MgO,MgO + Na六碳酸盐,-氧化和-氧化 + Na六碳酸盐.
- 分析了小肠液的微生物组成 (16S rRNA基因测序),挥发性脂肪酸,乳酸和氨;还评估了营养物质的消化能力.
主要成果:
- - 氧化增加了氨,乳酸盐和丁酸盐的反类度,与增加的Prevotella,Lactobacillus和Butyrivibrio丰度有关.
- 食缓冲剂补充剂没有影响食发酵代谢物或pH.
- 缓冲器显著改善了干物质,有机物质,NDF和ADF的表面全道消化能力.
结论:
- 在源和缓冲器使用之间没有发现相互作用效应.
- 补充 - 氧化增加了小肉丁酸盐和特定的细菌种群.
- 饮食缓冲剂提高了哺乳乳乳母牛的营养消化能力,特别是纤维成分.
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