van Aarde R J
J Reprod Fertil. 1985 Nov;75(2):583-91. doi: 10.1530/jrf.0.0750583.
The general pattern of steroid secretion during the 30-day oestrous cycle of the Cape porcupine is that of a surge (25-176 pg/ml) in oestradiol-17 beta secretion at the time of perforation of the vaginal closure membrane, followed by an increase in progesterone concentrations, the latter attaining peak values (mean 5.9 +/- 2.1 ng/ml) 8-19 days (13.8 +/- 2.8 days) after vaginal opening. Copulation occurred after the oestradiol-17 beta surge and the length of the luteal phase of the cycle varied from 21 to 35 days (29.3 +/- 4.7 days), this representing 93% of the length of the cycle. Perforation of the vaginal closure membrane was not always accompanied by an increase in oestradiol-17 beta levels and some instances (19%) of vaginal opening were not followed by an increase in progesterone secretion. The hormonal characteristics of the oestrous cycle of females housed with vasectomized males were similar to those of females housed with intact males.
在南非豪猪30天的发情周期中，类固醇分泌的一般模式是：在阴道封闭膜穿孔时，雌二醇-17β分泌出现激增（25 - 176 pg/ml），随后孕酮浓度升高，在阴道开口后8 - 19天（13.8 ± 2.8天）达到峰值（平均5.9 ± 2.1 ng/ml）。交配发生在雌二醇-17β激增之后，周期的黄体期长度从21天到35天不等（29.3 ± 4.7天），占周期长度的93%。阴道封闭膜穿孔并不总是伴随着雌二醇-17β水平的升高，并且有些情况下（19%）阴道开口后孕酮分泌并未增加。与输精管切除的雄性同居的雌性发情周期的激素特征与与完整雄性同居的雌性相似。
