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首页> 外文期刊>Journal of Veterinary Research >Monitoring vaginal electrical resistance, follicular waves, and hormonal profile during oestrous cycle in the transition period in Bangladeshi sheep
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Monitoring vaginal electrical resistance, follicular waves, and hormonal profile during oestrous cycle in the transition period in Bangladeshi sheep

机译：在孟加拉国羊的过渡期间监测阴道电阻，滤泡波和荷尔蒙曲线

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Introduction: The ovarian follicular dynamics, vaginal electrical resistance (VER), progesterone (P-4) and oestrogen (E-2) profiles were investigated during the oestrous cycle in four indigenous ewes. Material and Methods: Daily VER values were recorded with a heat detector. The follicles were observed and measured by trans-rectal ultrasonography. Blood was collected daily for hormonal profiles. Results: A significant variation in VER values (P 0.05) in oestrus by ewes and position in the sequence of cycles was observed. Trans-rectal ultrasonography of ovaries revealed the presence of 2-4 waves of follicular growth. Study of hormonal profiles by ELISA revealed a positive correlation between E-2 concentration and development of follicles and a negative correlation between P-4 concentration and their development. The concentrations of oestradiol increased in oestrus and then decreased to a basal level. Follicular growth was accompanied by a rise in the concentration of serum oestradiol. Inversely, when follicles received the stimulation for ovulation, concentration of progesterone started to fall, but after ovulation, it climbed back to its peak and remained at this state until next ovulatory follicle reached its maximum diameter. Conclusion: This study could help to set up a manipulative reproductive technique for improving genetic values in indigenous sheep.
机译：简介：在四个土着母羊的令人垂循环期间研究了卵巢滤色动力学，阴道电阻（VER），孕酮（P-4）和雌激素（E-2）型材。材料和方法：用热检测器记录每日Ver值。观察到卵泡并通过反肠超声检查测量。每天收集血液以进行激素谱。结果：观察到通过母程和循环序列中的母程中的ver值（p <0.05）的显着变化。卵巢的反肠超声检查显示出2-4波的滤泡生长。 ELISA的激素谱的研究显示E-2浓度和卵泡的发育与P-4浓度与其发育之间的负相关性的正相关性。 Ostradiol的浓度增加在发情中，然后降低到基础水平。卵泡生长伴随着血清雌二醇浓度的增加。相反，当卵泡接受排卵刺激时，孕酮的浓度开始落下，但排卵后，它爬回其峰值并保持在这种状态，直到下一个排卵卵泡达到其最大直径。结论：本研究有助于建立一种改善土着绵羊遗传值的操纵生殖技术。

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