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首页> 外文期刊>日本家禽学会誌 >Change in plasma concentrations of follicle-stimulating and luteinizing hormones during one day in hens
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Change in plasma concentrations of follicle-stimulating and luteinizing hormones during one day in hens

机译：母鸡一天中促卵泡激素和黄体生成素血浆浓度的变化

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In birds as well as mammals, luteinizing hormone (LH) induces ovulation and stimulates the production of progesterone (P4) in granulosa cells of follicles, while follicle-stimiulating hormone (FSH) promotes the growth of follicles. The ovulatory cycle in hens has a duration of about one day. The profile of LH release but not FSH release during one day including the ovulatory cycle is known. Therefore, in the present experiments, blood samples by the cunnulation method were collected at 2-hr intervals during ovulatory and non-ovulatory days in henskept under 14 hr light (0500 to 1900 hr) per day, and LH, FSH and P4 in the plasma were measured by RIA. Also, the largest (F1) and second largest preovulatory follicles (F2) were weighted at various times during ovulatory and non-ovulatorydays. On a non-ovulatory day. the plasma LH concentration was significantly high at 2100 hr, while the FSH concentration in the plasma showed a significantly high level at 1300 and 1500 hr. The plasma P4 concentration,with no relation to ovulatory and non-ovulatory days, exhibited the high values in the dark period. Also, on an ovulatory day, the plasma FSH concentration was a significantly high at 1300 and 1500 hr, coresponding to 17-18 hr before ovulation. In addition, the weights of F1 and F2 on both ovulatory and non-ovulatory days, increased gradually from 1500 hr after the FSH release to 0100 hr. The present results indicate that not only LH but also FSH is increased in the release early time in the dark period and late in the light period, respectively, with no relation to ovulation.
机译：在鸟类和哺乳动物中，促黄体生成激素（LH）诱导排卵并刺激卵泡颗粒细胞中孕酮（P4）的产生，而促卵泡激素（FSH）促进卵泡的生长。母鸡的排卵周期约为一天。已知在包括排卵周期的一天中LH释放而不是FSH释放的概况。因此，在本实验中，每天在14小时光照（0500至1900小时）下，在排卵期和非排卵期的隔卵期和不排卵日中，以2小时的间隔收集通过采血法采集的血样，并在采集后的LH，FSH和P4中采集血样。通过RIA测量血浆。同样，在排卵日和非排卵日的不同时间，对排卵前卵泡最大（F1）和第二大卵泡进行第二次加权。在非排卵日。血浆LH浓度在2100小时时显着升高，而血浆中的FSH浓度在1300和1500小时时显着升高。血浆P4浓度与排卵期和非排卵期无关，在黑暗时期表现出较高的值。同样，在排卵日，血浆FSH浓度在1300和1500小时显着高，对应于排卵前17-18小时。另外，排卵日和非排卵日的F1和F2的重量从FSH释放后的1500小时逐渐增加到0100小时。目前的结果表明，不仅LH而且FSH在黑暗时期的早期释放和在光照期后期的释放均增加，与排卵无关。

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