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Related Experiment Videos

The large bowel--a supplementary rumen?

R A Argenzio, C E Stevens

    The Proceedings of the Nutrition Society
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    The rumen and large intestine share similar microbial fermentation and nutrient absorption processes. Comparing these organs offers insights into digestive functions and diseases in both animals and humans.

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    Area of Science:

    • Comparative physiology
    • Gastroenterology
    • Microbiology

    Background:

    • The rumen and mammalian large intestine exhibit functional parallels in microbial digestion and nutrient absorption.
    • Both organs utilize microbial fermentation of carbohydrates, producing volatile fatty acids (VFAs).
    • pH regulation via buffering and organic acid absorption is crucial in both systems.

    Purpose of the Study:

    • To highlight the significant similarities between the rumen and the mammalian large intestine.
    • To explore the potential of comparative studies for understanding digestive physiology and pathology.
    • To identify suitable animal models for investigating specific digestive processes.

    Main Methods:

    • Comparative analysis of anatomical and physiological features.

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  • Review of existing literature on rumen and large intestine function.
  • Identification of species-specific adaptations in large intestine structure and function.

    • Main Results:

    • Similarities observed in microbial protein synthesis/degradation, VFA production, pH regulation, and VFA absorption.
    • Species variation exists in large intestine morphology, with the cecum or proximal colon serving as primary fermentation sites.
    • Sodium (Na) and VFA absorption are key drivers of water movement in the large intestine.

    Conclusions:

    • The functional analogies between the rumen and large intestine warrant further comparative investigation.
    • Rumen studies offer a model for understanding ion and VFA transport, applicable to the large intestine.
    • Comparative studies, particularly in pigs, monkeys, and horses, can advance understanding of human digestive health and disease.