アヒルの排卵周期における血中インヒビン,性腺刺激ホルモンおよびステロイドホルモン濃度

DOI 日本農学文献記事索引 Web Site Web Site PubMed 被引用文献2件 参考文献29件
  • YANG PeiXin
    Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences
  • MEDAN Mohamed S.
    Laboratory of Veterinary Physiology, Faculty of Agriculture, Tokyo University of Agriculture and Technology Department of Theriogenology, Faculty of Veterinary Medicine, Suez Canal University
  • ARAI Koji Y.
    Department of Tissue Physiology, Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • WATANABE Gen
    Laboratory of Veterinary Physiology, Faculty of Agriculture, Tokyo University of Agriculture and Technology Department of Basic Science, The United Graduate School of Veterinary Sciences, Gifu University
  • TAYA Kazuyoshi
    Laboratory of Veterinary Physiology, Faculty of Agriculture, Tokyo University of Agriculture and Technology Department of Basic Science, The United Graduate School of Veterinary Sciences, Gifu University

書誌事項

タイトル別名
  • Plasma Concentrations of Immunoreactive (ir)-Inhibin, Gonadotropins and Steroid Hormones during the Ovulatory Cycle of the Duck

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The present study was undertaken to determine changes in circulating levels of immunoreactive (ir)-inhibin, FSH, LH, estradiol-17β, progesterone, and testosterone during the ovulatory cycle of Shao ducks. Serial blood samples were taken from two groups of laying ducks for measurement of ir-inhibin, gonadotropins, and steroid hormones at 2 h intervals for 24 h. Plasma concentrations of ir-inhibin did not change significantly during the ovulatory cycle. The highest level of plasma ir-inhibin was observed 6 h prior to ovulation, which coincided with a decreased level of plasma FSH. One FSH surge was found 12 h after ovulation. Estradiol-17β, progesterone, and testosterone were also determined during the ovulatory cycle. Two peak values were detected for estradiol-17β 8 h before ovulation and 4 h after ovulation, while progesterone started to increase 4 h before ovulation and reached a peak at ovulation. The highest level of plasma testosterone was detected around the time of ovulation. These results suggest that inhibin may be involved in the control of FSH secretion during the ovulatory cycle. In addition, both LH and progesterone are of importance in the ovulation process of Shao ducks.<br>

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