Effects of Light and Darkness on the Hair Growth of Rabbits When Hair Tonic Containing Amino Acid Is Applied

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  • HASEGAWA Tadao
    Department of Agricultural Chemistry, Tokyo University of Agriculture
  • MATSUMOTO Norikazu
    Department of Agricultural Chemistry, Tokyo University of Agriculture
  • SUZUKI Takao
    Department of Agricultural Chemistry, Tokyo University of Agriculture

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Other Title
  • 養毛アミノ酸塗布時のウサギの毛生に及ぼす明暗の影響
  • ヨウモウ アミノサン トフジ ノ ウサギ ノ モウセイ ニ オヨボス メイアン

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Abstract

We have already obtained findings that the amino acids composed of acetyl-L-methionine and L-serine could accelerate the hair growth of rabbits. The effects of light as a physical factor were particularly investigated in the current studies, in which the experimental rabbits were given the hair tonic containing the above amino acids and exposed to lamp light (14L:10D), natural light and darkness, respectively.<br> As the result, a photoperiodic stimulation was observed in both the artificial and natural lights. The darkness was definitely effective for the unfavorable growth of hair. The hair root in a group of rabbits given an amino acid solution had grown in the order of lamp light, natural and darkness with a significant difference of 5% between the light and the darkness.

Journal

  • Nippon Nōgeikagaku Kaishi

    Nippon Nōgeikagaku Kaishi 53 (3), 103-105, 1979

    Japan Society for Bioscience, Biotechnology, and Agrochemistry

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