富含纤维的成分在物理化学特性上有所不同,可调节猪的消化器过渡和消化动力学
C Lannuzel1, R J Veersma2, G van Erven3
1Wageningen University & Research, Animal Nutrition Group, De Elst 1, 6708 WD Wageningen, the Netherlands.
Animal : an international journal of animal bioscience
|April 2, 2025
概括
食纤维的特性显著影响了猪的消化. 精细的小麦和向日的外加速了胃的排空,改变了大肠的运输,而素改善了粉的消化,但降低了的消化能力.
科学领域:
- 动物营养 动物营养
- 消化系统生理学 消化系统生理学
- 食品科学 食品科学 食品科学
背景情况:
- 食纤维的物理化学特性会影响猪的消化过程和营养消化动力学.
- 了解不同不溶性纤维和pectin如何影响胃肠道 (GIT) 对于优化料配方至关重要.
研究的目的:
- 为了评估不溶性纤维 (小麦,软木面粉,向日种子) 和素对猪的消化器过境和营养消化的影响.
- 评估纤维来源和pectin添加如何影响整个GIT的消化分量的平均保留时间 (MRT) 和营养消化能力.
主要方法:
- 四种饮食是用小麦草 (WS),软木面粉 (WF),向日种子 (SF) 或含有乳清的WS制定的.
- 通过定量便采集确定了看似的全道消化能力.
- 液体,微型固体和不溶性纤维颗粒的平均保留时间 (MRT) 用标记物 (Yb-EDTA,TiO2,Chromium) 测量在接近稳定状态消化通道的猪中.
主要成果:
- 精细的WF和SF减少了胃中固体的MRT,与粗的WS相比,减少了颗粒分离.
- 除了WS外,pectin还减少了胃中的固体-液体分离,增加了小肠中小肠粉的消化能力,但降低了全道的消化能力.
- 与细WF和SF相比,粗WS延迟了大肠中的消化器过渡;纤维发酵通常很差,pectin没有显著影响WS发酵.
结论:
- 与粗相比,细不溶性纤维 (WF,SF) 加快胃排空并改变猪大肠中的消化器过境.
- 在粗草中补充点可以改善近端小肠粉的消化能力,但会对的利用产生负面影响.
- 纤维的物理化学特性在调节猪肠道动力学和营养消化中发挥着重要作用.
相关概念视频
What is Monogastric Digestion?
69.9K
The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
69.9K
Lipid Digestion
89.4K
Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
89.4K
Protein Digestion
101.1K
Protein digestion begins in the stomach, where the highly acidic environment can easily disrupt protein structure by exposing the peptide bonds of polypeptide chains. After polypeptide chains are broken into individual amino acids by a series of digestive enzymes, the amino acids are transported to the liver via the bloodstream to produce energy.
101.1K
Mechanical and Chemical Digestion in the Small Intestine
636
The small intestine plays a crucial role in our digestive system, performing both mechanical and chemical digestion.
Mechanical digestion in the small intestine involves movements such as segmentations and migrating motility complexes (MMCs), primarily controlled by the myenteric plexus. Segmentations are localized contractions occurring in areas of the intestine distended by chyme—a mixture of partially digested food. These contractions mix chyme with digestive juices, facilitating...
Mechanical digestion in the small intestine involves movements such as segmentations and migrating motility complexes (MMCs), primarily controlled by the myenteric plexus. Segmentations are localized contractions occurring in areas of the intestine distended by chyme—a mixture of partially digested food. These contractions mix chyme with digestive juices, facilitating...
636
Intestinal Phase of Digestion
4.9K
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
4.9K
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
259
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
259


