[青年公牛血浆促黄体生成素的昼夜变化]
[Circadian plasma LH changes in young bulls].
作者信息
Thibier M
出版信息
Ann Endocrinol (Paris). 1975 Jul-Aug;36(4):205-10.
PMID:1203012
Abstract
Six young postpubertal bulls (1 year of age) were blood sampled on one to three occassions each, at hourly intervals for 25 hours. One of them was sampled on a separate occasion every 10 minutes for 2 hours. They were managed in similar conditions since they were 8 days old. LH was measured by radioimmunoassay. There was not a circadian periodicity of LH levels. Peak frequencies or magnitudes varied widely not only between bulls but also between days.
摘要
六头青春期后的年轻公牛（1岁），每头分别在一至三个时间段进行采血，每小时采一次，共采25小时。其中一头在另外一个时间段每隔10分钟采血一次，共采2小时。自8日龄起，它们就处于相似的饲养条件下。采用放射免疫分析法测定促黄体生成素（LH）。促黄体生成素水平不存在昼夜周期性。峰值频率或幅度不仅在公牛之间差异很大，而且在不同日期之间也有很大差异。
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