Bonney R C, Wood D J, Kleiman D G
J Reprod Fertil. 1982 Jan;64(1):209-15. doi: 10.1530/jrf.0.0640209.
Urinary excretion of oestrogens and androgens by a pair of giant pandas was monitored by radioimmunoassay during behavioural oestrus through two successive breeding seasons. The excretion of oestrogens by the female was at a maximum during the proceptive period and lower during the period of receptivity. In the first breeding season studied, elevated androgen excretion in the male coincided with peak receptivity in the female. The study indicates that accurate timing of natural mating or artificial insemination could be achieved by monitoring oestrogen excretion in the female.
在两个连续的繁殖季节中，通过放射免疫分析法监测了一对大熊猫在行为发情期雌激素和雄激素的尿液排泄情况。雌性大熊猫雌激素的排泄在求偶前期达到最高值，在接受期则较低。在第一个研究的繁殖季节中，雄性大熊猫雄激素排泄量的增加与雌性大熊猫的接受高峰期相吻合。该研究表明，通过监测雌性大熊猫雌激素的排泄情况，可以实现自然交配或人工授精的精确 timing（此处原文timing未明确含义，按原文保留）。
