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[泌乳反刍动物的标记尿素研究。4. 15N-尿素在山羊奶碱性氨基酸中的掺入情况]

[Studies using labeled urea on lactating ruminants. 4. Incorporation of 15N-urea into the basic amino acids of goat milk].

作者信息

Gruhn K, Thelemann W, Hennig A

出版信息

Arch Tierernahr. 1975 Dec;25(9-10):629-36. doi: 10.1080/17450397509423230.

DOI:10.1080/17450397509423230
PMID:1241941
Abstract

Goats were used in a trial to investigate the rate of 15N incorporation from labelled urea into the basic amino acids of the milk (excess of 15N = 24.9 atom%). As early as 20 minutes after administration of the first dose of 15N urea nitrogen labelling in arginine and lysine was observed. The highest level of 15N labelling was noticed for lysine and arginine 24 hrs after start of the trial. The peak values of labelling for histidine were essentially lower. Reference is made to peculiarities of the ruminal metabolism of histidine.

摘要

在一项试验中使用山羊来研究标记尿素中15N掺入牛奶碱性氨基酸的速率（15N过量=24.9原子%）。在给予第一剂15N尿素氮后仅20分钟，就观察到精氨酸和赖氨酸中有标记。在试验开始后24小时，赖氨酸和精氨酸的15N标记水平最高。组氨酸的标记峰值则低得多。文中提及了组氨酸瘤胃代谢的特点。

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