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Related Experiment Videos

Plasma ascorbic acid concentration following ascorbic acid loading in chicks.

S L Pardue, J P Thaxton, J Brake

    Poultry Science
    |December 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Supplemental ascorbic acid (AA) significantly increases plasma AA levels in chicks, with effects observed at 250 ppm and higher. Plasma AA concentrations peak around 8 hours and remain elevated for up to 16 hours after supplementation ceases.

    Area of Science:

    • Animal Nutrition
    • Biochemistry
    • Avian Physiology

    Background:

    • Ascorbic acid (AA), or vitamin C, is essential for various physiological processes in poultry.
    • While generally synthesized by birds, stress or specific conditions may necessitate supplemental AA.
    • Understanding optimal supplementation levels and duration is crucial for avian health and productivity.

    Purpose of the Study:

    • To investigate the dose-dependent and time-dependent effects of supplemental ascorbic acid on plasma AA concentrations in chicks.
    • To determine the threshold concentration of supplemental AA required for significant plasma elevation.
    • To assess the duration of elevated plasma AA following supplementation cessation.

    Main Methods:

    • Three trials involving broiler chicks were conducted.

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  • Supplemental ascorbic acid was administered via drinking water at varying concentrations (0-2000 ppm).
  • Plasma AA levels were measured at different time points relative to supplementation initiation and removal.

    • Main Results:

    • Plasma AA concentrations significantly increased in chicks receiving 250 ppm or higher supplemental AA.
    • Significant increases in plasma AA were observed within 4 hours of supplementation (1000 ppm).
    • Peak plasma AA levels occurred approximately 8 hours post-supplementation, with elevated levels persisting up to 16 hours after withdrawal.

    Conclusions:

    • Supplemental ascorbic acid effectively elevates plasma AA levels in chicks in a dose-dependent manner.
    • A minimum concentration of 250 ppm is required for significant plasma AA elevation.
    • Plasma AA levels remain elevated for a considerable period after supplementation stops, indicating a sustained effect.