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Changes in plasma amino acids in the developing chick.

R J Frampton, R W Yardley, R A MacMahon

    Biology of the Neonate
    |January 1, 1986
    PubMed
    Summary
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    Chicken embryo plasma amino acid levels peak mid-gestation and then decline before hatching. Post-hatching, most amino acids decrease, but aspartate, glutamate, and taurine concentrations significantly increase.

    Area of Science:

    • Developmental Biology
    • Biochemistry
    • Avian Physiology

    Background:

    • Amino acids are crucial for embryonic development and metabolic processes.
    • Understanding plasma amino acid dynamics is key to assessing developmental health.
    • Chicken embryos provide a valuable model for studying vertebrate development.

    Purpose of the Study:

    • To investigate the developmental changes in plasma amino acid concentrations in chicken embryos.
    • To identify specific amino acids that exhibit significant fluctuations during embryonic development and post-hatching.
    • To establish a reference profile for plasma amino acids in developing chickens.

    Main Methods:

    • Arterial blood sampling from chicken embryos at various developmental stages.
    • Quantitative analysis of plasma amino acid concentrations using established biochemical assays.

    Related Experiment Videos

  • Comparative analysis of amino acid levels from mid-gestation through to post-hatching.

    • Main Results:

    • Plasma amino acid concentrations showed a dynamic pattern, peaking around day 16 of gestation.
    • A general decline in most amino acids was observed as hatching approached.
    • Post-hatching, aspartate, glutamate, and taurine demonstrated a significant rise in plasma concentrations.

    Conclusions:

    • Plasma amino acid profiles undergo significant, stage-specific changes during chicken embryonic development.
    • The observed increases in aspartate, glutamate, and taurine post-hatching suggest their critical roles in early post-hatchling life.
    • These findings contribute to a deeper understanding of avian metabolic adaptations during development.