Effect of Excess of Individual Essential Amino Acids in Diets on Chicks
Effect of Excess of Individual Essential Amino Acids in Diets on Chicks
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日粮中个别必需氨基酸过量对雏鸡的影响
DOI：
10.2141/jpsa.17.135
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
K. Yamaguchi
中科院分区：
文献类型：
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作者：
J. Okumura;K. Yamaguchi
第8 ~ 18天饲粮中过量添加单一氨基酸对雏鸡生长和采食量有不同程度的抑制作用，且影响程度与氨基酸添加种类有关。l -蛋氨酸和l -苯丙氨酸引起的生长抑制最严重。l -色氨酸、l -苏氨酸、l -赖氨酸、l -组氨酸、l -酪氨酸和l -亮氨酸具有明显的毒性。所有其他测试的氨基酸，如l -精氨酸、甘氨酸、l -缬氨酸、l -胱氨酸和l -异亮氨酸，没有或只有轻微的影响。饲粮过量时，鸡血浆氨基酸浓度升高，可能存在支链氨基酸拮抗作用。
Excesses of single amino acids given in the diets of chicks from day 8 to day 18 depressed growth and food intake to varying degrees, which were dependent on the kind of amino acid supplemented. L-Methionine and L-phenylalanine caused the severest growth depression. L-Tryptophan, L-threonine, L-lysine, L-histidine, L-tyrosine and L-leucine were apparently toxic. All other amino acids tested, L-arginine, glycine, L-valine, L-cystine and L-isoleucine, showed no or only a slight effect.An increase in the blood plasma concentration of the amino acid in dietary excess was observed, and the possible existence of a branched-chain amino acid antagonism was suggesested in chicks.