发酵棕核蛋糕通过调节肠微生物群来改善肉牛的营养降解
Hui Mi1,2, Zhaozhe Wang1,2, Haixiang Xiao1,2
1College of Animal Science and Technology, Hunan Agricultural University, Changsha, China.
Frontiers in microbiology
|December 29, 2025
概括
发酵棕核蛋糕 (PKC) 与尼日尔和曼南酶提高了其营养质量. 这种发酵的PKC增强了营养的消化能力,并改变了牛肉类牛的肠微生物群,显示出作为替代料成分的潜力.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 营养生物化学 营养生物化学
背景情况:
- 棕核蛋糕 (PKC) 是棕油提取的副产品,通常受到其高纤维和低蛋白质消化能力等反营养因素的限制.
- 使用特定微生物和酶的发酵可以改善营养状况,减少料中的反营养成分.
研究的目的:
- 评估PKC与黑色菌和曼南酶共同发酵对其营养质量的影响.
- 评估用发酵PKC (FPKC) 取代传统料成分对肉牛生长表现,营养消化能力,反发酵和微生物群体的影响.
主要方法:
- PKC与黑色阿斯伯菌和曼南酶一起发酵.
- 30头肉牛被分为对照组和治疗组,分别接受了90天的FPKC补充饮食.
- 分析了生长表现,营养消化能力 (DMD,CPD,NDFD),乳头发酵参数和乳头微生物组成 (通过16SrRNA测序).
主要成果:
- 同发酵显著改善了PKC的营养质量,并降低了曼南含量.
- 虽然生长表现相似,但FPKC组的DMD,CPD和NDFD显着更高.
- FPKC饮食导致小乳酪酸盐和NH3-N的降低,微生物群落的转变有利于Bacteroidetes而不是Firmicutes.
结论:
- 与Aspergillus niger和mannananase共同发酵是一种有效的方法,可以提高PKC的营养价值.
- 在肉牛的饮食中加入FPKC可以改善营养消化能力,并调节肠微生物群.
- 作为一个有价值和可持续的替代性料原料,FPKC显示出对肉牛生产的承诺.
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