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Related Experiment Videos

A silicon requirement for normal skull formation in chicks

E M Carlisle

    The Journal of Nutrition
    |February 1, 1980
    PubMed
    Summary

    Silicon deficiency in cockerels caused skull abnormalities due to reduced collagen in bone matrix. This highlights silicon's crucial role in early bone formation and connective tissue development.

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    Biochemical and morphological changes associated with long bone abnormalities in silicon deficiency.

    The Journal of nutrition·1980

    Area of Science:

    • Biochemistry
    • Nutritional Science
    • Developmental Biology

    Background:

    • Previous studies utilized crystalline amino acid-based diets to investigate silicon's role.
    • This study employed a natural protein-based diet to assess silicon's impact under different nutritional conditions.

    Purpose of the Study:

    • To investigate the effect of a silicon-deficient diet with natural protein on skull development in cockerels.
    • To determine the specific impact of silicon on bone matrix composition, particularly collagen content.

    Main Methods:

    • Day-old cockerels were fed a silicon-deficient basal diet with or without supplemental silicon under trace element-controlled conditions.
    • Macropathological, X-ray, and histological examinations were performed on chick skulls.
    • Biochemical analyses quantified collagen, bone mineral, non-collagenous protein, and hexosamine in frontal bones.

    Main Results:

    • Silicon deficiency led to significant skull abnormalities, including a narrower frontal area and depressed dorsal median line.
    • Histological examination revealed reduced trabeculae and calcification in the affected skull regions.
    • Biochemical analysis showed a significant reduction in collagen content in the frontal bones of silicon-deficient chicks.

    Conclusions:

    • Silicon plays a critical role in the early stages of bone formation, primarily by influencing collagen content in the connective tissue matrix.
    • Silicon deficiency results in abnormal skull matrix formation, leading to developmental defects.
    • Dietary silicon is essential for maintaining normal skull architecture and bone health in growing birds.

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