わとりひなにおけるリジンの栄養

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書誌事項

タイトル別名
  • Studies on lysine nutrition of chicks
  • ニワトリヒ ナニ オケル リジン ノ エイヨウ ヒナ ノ カンゾウ チュウ ノ トランスアミナーゼ カッセイ オヨビ カンゾウ ソシキ ノ サンソ ショウヒリョウ ニ オヨボス リジン ケツボウ ノ エイキョウ
  • Effects of lysine deficiency on transaminase activities in liver and oxygen consumption in liver of chicks
  • ひなの肝臓中のトランスアミナーゼ活性および肝臓組織の酸素消費量におよぼすリジン欠乏の影響

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説明

Previous studies at this laboratory indicated that chicks fed diets slightly deficient in lysine showed greater gains in tissue fat but smaller gains in the amount of protein deposition.<br>These experiments were conducted to obtain biochemical information regarding enzymes and other components possibly involved in graded levels of lysine deficiency.<br>Chicks were fed a ration containing sufficient, slightly deficient and severely deficient levels of lysine.<br>Livers extracted from each one of the groups were used in the determinations. The changes in plasma level of amino acids were determined by an amino acid auto analyzer.<br>The results are following.<br>1. Seven-day-old chicks were fed diets with variations in lysine level ranging from 0.76 to 1.01% (optimum level) for two weeks. Improved weight gain and feed conversion were obtained as the lysine content of the diet increased.<br>2. The increase in glutamic-oxalacetic transaminase and glutamic-pyruvic transaminase was not observed in the supernatant fraction of the liver, whereas it was observed in the mitochondria fraction.<br>3. The concentration of free amino acids, threonine, alanine, valine, methionine, isoleucine, leucine, tyrosine, phenylalanine, histidine and proline in blood plasma appeared to increase according to the degree of lysine deficiency in the diet.<br>4. Oxygen consumption of liver slices was essentially the same when experessed asμl oxygen per 100mg slice, regardless of the lysine levels in the diets. However, the sufficient lysine diet consistently gave a growth response over the deficient diet. A correction for similar body weight was necessary. Oxygen consumption of whole livers of chicks fed lysine deficient diets was significantly increased compared to that of sufficient lysine feeding, when based upon metabolic body size.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 42 (9), 427-434, 1971

    公益社団法人 日本畜産学会

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