Follicular Dynamics, Ovulation and Conception Rates in Bitches
Follicular Dynamics, Ovulation and Conception Rates in Bitches
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DOI：
10.1111/j.1439-0531.2009.01416.x
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发表时间：
2009-07-01
影响因子：
1.7
通讯作者：
Freeman, S. L.
中科院分区：
文献类型：
--
作者：
England, G. C. W.;Russo, M.;Freeman, S. L.
在一项临床研究中，实时超声成像被用来估计不同大小的卵泡数量、排卵率和受孕率，研究发情诱导后卵泡的动态变化，（在排卵前LH峰前100 - 60天），并且似乎有一个从小卵泡群体的转变在LH激增前约2天，从直径1-3 mm的卵泡（直径> 4 mm）变为大卵泡（直径> 4 mm）。尽管大多数被空化，但可以可靠地识别黄体。检测到高排卵率（97-100%）和妊娠率（86-100%），尽管妊娠率约为70%，但在8%和92%之间变化。在研究的临床人群的狭窄范围内，存在年龄与生殖性能相关的趋势。促性腺激素方案诱导发情似乎导致大量不排卵的小卵泡，而使用卡麦角林时，小卵泡和大卵泡的数量以及黄体母细胞的数量与对照周期相似。
Real-time ultrasound imaging was used in a clinical study to estimate the number of follicles of different sizes, ovulation and conception rates, and to study follicle dynamics following oestrus-induction of bitches.Follicles were identified during late anoestrus (between 100 and 60 days prior to the pre-ovulatory LH surge) and there appeared to be a shift in the population from small follicles (1-3 mm in diameter) to large follicles (> 4 mm diameter) approximately 2 days prior to the LH surge. Corpora lutea could be reliably identified although the majority were cavitated. High ovulation rates (97-100%) and pregnant rates (86-100%) were detected, and although the conception rate was approximately 70% it varied between 8 and 92%. Within the narrow range of the clinical population studied there were trends relating age to reproduction performance. Oestrus induction with a gonadotrophin regime appeared to result in large numbers of small follicles that did not ovulate, whilst when using cabergoline the number of small and large follicels and the number of copora lutea were similar to those of control cycles.