無菌ヒナのロイシンとバリンの要求量

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書誌事項

タイトル別名
  • Leucine and Valine Requirements of the Growing Germfree Chicks
  • ムキン ヒナ ノ ロイシン ト バリン ノ ヨウキュウリョウ エイブン

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To compare the requirements of leucine and valine of the growing germfree and conventional chicks, 7-day-old chicks were fed a diet with graded levels of leucine or valine for 7 days. Daily gains of body weight of the germfree chicks were greater than those of the conventional chicks when the dietary leucine or valine level was higher than the requirement level. Adversely, daily gains of body weight of the germfree chicks were less than those of the conventional chicks when the dietary leucine or valine level was very low. Leucine and valine requirments for maximum growth, however, was the same and estimated to be 0.95 and 0.78%, respectively, of the diet for both groups. After the feeding test, the chicks were injected with L-leucine-and L-valine-U-14C and expired carbon dioxide was collected for 2 and 3 hours, respectively. From the percentage of recovery of 14C in the expired carbon dioxide, the leucine and valine requirements were found to be 0.80 and 0.53% of the diet for both groups, respectively. Three hours after feeding test, the plasma free valine concentration was estimated in the chicks which was not injected the isotope. The requirement of valine was estimated to be 0.59% for the germfree chicks and 0.54% for the conventional chicks. From the above data, it may be concluded that no difference, or very small if any, is found in the requirements of leucine and valine between the germfree chicks and those of the conventional chicks.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 48 (12), 741-747, 1977

    公益社団法人 日本畜産学会

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