Refractoriness in quail leads to a reduction in the photoperiodic drive on LH secretion.
Refractoriness in quail leads to a reduction in the photoperiodic drive on LH secretion.
复制标题
DOI：
10.1677/joe.0.1160363
复制
发表时间：
1988-03
期刊：
影响因子：
--
通讯作者：
B. Follett
中科院分区：
文献类型：
--
作者：
B. Follett
这一假设被提出，长时间的阉割反应在鹌鹑中应该变得不那么明显的鸟类暴露于长时间的光周期。研究人员对两组阉割的鹌鹑进行了为期9周的睾丸激素预处理，以抑制黄体生成素的分泌，同时将它们暴露在短时间或长时间的环境中。阉割反应，然后在长时间内通过撤回睾酮和随后的黄体生成素分泌增加率来测量。在去除睾酮后的7周内，两组LH浓度均稳步上升，但先前暴露于长日的组的LH浓度增长率仅为先前暴露于短日组的50% （P < 0.025）。未预先注射睾酮的鹌鹑，在短日饲养9周后转入长日饲养，其长日阉割反应没有改变。
The hypothesis was advanced that the long-day castration response in quail should become less pronounced in birds made refractory by exposure to long photoperiods. This was tested by pretreating two groups of castrated quail with testosterone for 9 weeks to suppress LH secretion whilst exposing them either to short days or to long days. The castration response was then measured on long days by withdrawing the testosterone and following the subsequent rate of increase in LH secretion. In both groups LH concentrations increased steadily for 7 weeks after removing the testosterone but the rate of increase in the group previously exposed to long days was only 50% of that in the group previously held on short days (P less than 0.025). The long-day castration response in quail not pretreated with testosterone was not altered by retaining the birds for 9 weeks on short days before transfer to long days.