Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Starch digestion and utilization in ruminants.

E R Orskov

    Journal of Animal Science
    |November 1, 1986
    PubMed
    Summary

    Increasing starch digestion in ruminants can cause digestive issues due to limited postruminal capacity and animal variability. Strategies to prevent low ruminal pH are recommended over enhancing starch digestion.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    The development of an intraruminal nylon bag technique using non-fistulated animals to assess the rumen degradability of dietary plant materials.

    Animal : an international journal of animal bioscience·2017
    Same author

    Effects of tropical high tannin non legume and low tannin legume browse mixtures on fermentation parameters and methanogenesis using gas production technique.

    Asian-Australasian journal of animal sciences·2014
    Same author

    Variation between sheep in renal excretion of [14C]allantoin.

    The British journal of nutrition·2002
    Same author

    Effect of glucose supply on fasting nitrogen excretion and effect of level and type of volatile fatty acid infusion on response to protein infusion in cattle.

    The British journal of nutrition·2000
    Same author

    Supplement strategies for ruminants and management of feeding to maximize utilization of roughages.

    Preventive veterinary medicine·1999
    Same author

    The effects of acute and chronic protein depletion and accretion on plasma concentrations of insulin-like growth factor-1, fibronectin and total protein for ruminants nourished by intragastric infusion of nutrients.

    The British journal of nutrition·1997

    Area of Science:

    • Ruminant nutrition
    • Animal science
    • Digestive physiology

    Background:

    • Most grain starch is fermented in the rumen, but corn and sorghum can escape.
    • Starch escaping ruminal fermentation is digested postruminally or fermented in the large intestine.
    • Ruminant diets high in starch can lead to metabolic and digestive disturbances.

    Purpose of the Study:

    • To evaluate the consequences of starch fermentation in ruminants.
    • To determine the capacity for starch digestion in the small intestine.
    • To assess the impact of postruminal starch fermentation on animal health and productivity.

    Main Methods:

    • Review of existing literature on starch digestion and fermentation in ruminants.
    • Analysis of the physiological limits for starch digestion in the small intestine.
    • Examination of the metabolic effects of high propionic acid levels and low ruminal pH.

    Main Results:

    • Small intestine starch digestion capacity is limited (100-200 g/d raw, 200-300 g/d gelled).
    • Cecal fermentation of starch increases nitrogen loss and can overwhelm liver metabolism.
    • Low ruminal pH from starch reduces fiber digestion, impacting milk production and fatty acid synthesis.

    Conclusions:

    • Attempts to increase postruminal starch digestion are unlikely to be beneficial due to limited capacity and high animal variability.
    • Managing ruminal pH by adjusting cereal processing is crucial for preventing digestive problems.
    • Focus should be on optimizing ruminal fermentation rather than increasing postruminal starch digestion.

    Related Experiment Videos