磨粉和冷微小麦的含量刺激纤维降解和发酵在整个肉的胃肠道不同
Paulien Vanderghinste1, An Bautil1, Steven J Simmonds1
1Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M²S), KU Leuven, 3001 Leuven, Belgium.
Poultry science
|January 31, 2026
概括
肉料纤维颗粒大小影响肠道健康. 粗小麦和细小麦含量低,在胃肠道不同地刺激纤维发酵,改善肠道功能.
科学领域:
- 动物科学动物科学
- 营养科学 营养科学
- 胃肠道生理学 胃肠道生理学
背景情况:
- 食纤维分量通过微生物短链脂肪酸 (SCFA) 生产提高肉肠道健康和性能.
- 纤维的颗粒大小会影响其发酵部位 (肠与前肠) 和疗效,但机制尚不清楚.
研究的目的:
- 调查小麦颗粒大小和含量水平对肉纤维降解,发酵和肠道健康的影响.
- 阐明纤维颗粒大小在整个胃肠道 (GIT) 的作用及其与包容水平的相互作用.
主要方法:
- 一个2x2的因数设计比较粗 (WB452,452微米) 和细 (WB27,27微米) 的小麦在低 (0.2%,L02) 和高 (2%,L2) 含有水平的男性罗斯308肉 (d 1-37).
- 在d 10和d 37时评估了GIT发育,纤维降解,发酵标志物 (SCFA) 和肠道健康指标 (血乳酸盐,微生物组成).
主要成果:
- 粗小麦 (WB452) 增强了前纤维的降解和发酵,通过降低胃肠的pH值和增加伊莱尔的阿拉比诺基兰和黄油酸来表明.
- 这两种大小都在d 10增加了白内障中的SCFA产生细菌,但没有改变白内障SCFA含量.
- 与高含量水平 (L2) 相比,低含量水平 (L02) 对白内障功能和肠道健康产生更强烈的积极影响.
结论:
- 纤维颗粒的大小会影响发酵的位置和机制,粗纤维在前作用,细纤维可能在中作用.
- 低含量细小麦和粗小麦可以有效地刺激纤维发酵,改善 brojlers 的肠道健康.
- 肉的年龄和特定的GIT段是决定食纤维颗粒大小有效性的关键因素.
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