Brookhyser K M, Aulerich R J
J Endocrinol. 1980 Nov;87(2):213-9. doi: 10.1677/joe.0.0870213.
Venous blood of eight cyclic female chinchillas (Chinchilla laniger) was collected twice weekly during all stages of the oestrous cycle and levels of progesterone were determined by radioimmunoassay. Consumption of food, body weight and perineal colour were also monitored in 25 cyclic female chinchillas. Cyclic trends were significant for feed consumption (P < 0.01), colour of the perineum (P < 0.001) and body weight (P < 0.001). Analysis of data used a standardized cycle of 36 days which was arranged according to vaginal perforation. This was subdivided into six periods with 6 days in each. Values of progesterone in the serum ranged from 0.07 to 6.27 ng/ml (n = 64 samples, each in duplicate), and the period of 6 days with the lowest mean progesterone value was that which included the first day of vaginal perforation. The pattern of fluctuations of progesterone resembled that of another hystricomorph rodent, the guinea-pig.
在动情周期的各个阶段，每周两次采集8只处于动情周期的雌性毛丝鼠（Chinchilla laniger）的静脉血，采用放射免疫分析法测定孕酮水平。同时，对25只处于动情周期的雌性毛丝鼠的食物摄入量、体重和会阴部颜色也进行了监测。食物摄入量（P < 0.01）、会阴部颜色（P < 0.001）和体重（P < 0.001）的周期性变化具有显著性。数据分析采用根据阴道穿孔情况安排的36天标准周期，该周期细分为6个时期，每个时期6天。血清中孕酮值范围为0.07至6.27 ng/ml（n = 64个样本，每个样本重复测定），平均孕酮值最低的6天时期包括阴道穿孔的第一天。孕酮的波动模式与另一种豪猪型啮齿动物豚鼠相似。
