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首页> 外文期刊>Tropical Animal Health and Production >Ultrasonographic studies on ovarian dynamics and associated estrus manifestations of jennies under controlled management, Ethiopia
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Ultrasonographic studies on ovarian dynamics and associated estrus manifestations of jennies under controlled management, Ethiopia

机译：埃塞俄比亚受控管理下珍妮卵巢动力学及相关发情表现的超声检查

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A serial ultrasonographic study was conducted on nine jennies aged 5-15 years from January to April 2008 with the objective of studying ovarian follicular dynamics and estrus manifestations under controlled management. Ovarian follicular activity was determined from the number and size distribution of follicles, length of interovulatory interval (IOI), growth rate of preovulatory follicles, diameter of follicles at the onset of estrus, and incidence of ovulation. Estrus manifestations were characterized using length of estrus and estrous cycle. The mean (+or-SD) number of follicle detected per ovary was 5.45+or-2.3 (range, 1-16) with sizes ranging from 2.9 to 44 mm. The mean (+or-SD) size of follicle encountered at the onset of estrus was 25.9+or-3.7 mm (range, 20.9-34.4) while that of the preovulatory follicles at -1 day before ovulation was 36.81+or-3.78 mm. The mean (+or-SD) IOI, estrus, and estrous cycle length were 25.4+or-3.6, 7.9+or-2.9, and 24.2+or-7.4 days, respectively. The mean (+or-SD) growth rate of the preovulatory follicle after the day of divergence was 1.9+or-0.3 mm/day. Serum progesterone profile followed the same patterns of ovarian dynamics with maximum values being detected during midluteal phase. Serum progesterone assay revealed blood progesterone profiles of <1.0 ng/ml during estrus and up to 11 ng/ml during midluteal phase with a pattern following follicular dynamics. Body condition of the study jennies steadily increased and was positively correlated (r=0.52, p<0.001) with the diameter of the preovulatory follicle. In conclusion, the ultrasonic evaluation has revealed that follicular dynamics of jennies were generally related with body condition which might have been influenced by the type of management.
机译：从2008年1月至2008年4月，对9名年龄在5-15岁的詹妮进行了一系列的超声检查，目的是研究在受控管理下的卵巢卵泡动力学和发情表现。从卵泡的数量和大小分布，排卵间隔时间（IOI）的长度，排卵前卵泡的生长速度，发情期卵泡直径和排卵发生率来确定卵巢的卵泡活性。使用发情的长度和发情周期来表征发情表现。每个卵巢检测到的卵泡的平均数（+或-SD）为5.45+或-2.3（范围为1-16），大小范围为2.9至44mm。发情开始时遇到的卵泡平均大小（+或-SD）为25.9+或-3.7 mm（范围，20.9-34.4），而排卵前-1天排卵前卵泡的平均大小为（36.81+或-3.78 mm） 。平均（+或-SD）IOI，发情和发情周期长度分别为25.4+或-3.6、7.9+或-2.9和24.2+或-7.4天。发散日后排卵前卵泡的平均（+或-SD）生长速率为1.9+或-0.3 mm /天。血清孕酮曲线遵循相同的卵巢动力学模式，在黄体中期检测到最大值。血清黄体酮测定显示发情期间血液中的孕酮谱<1.0 ng / ml，而在黄体中期则高达11 ng / ml，并遵循卵泡动力学。研究的詹妮的身体状况稳定增加，并且与排卵前卵泡直径呈正相关（r = 0.52，p <0.001）。总之，超声评估表明，珍妮的卵泡动力学通常与身体状况相关，这可能已受到管理方式的影响。

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