1·Using female mice in research is complicated by the females' oestrus cycle - it impacts on neuro-physiological parameters, including behaviour and perception of stress.
由于雌性小鼠的发情周期，用雌性小鼠进行的研究很复杂——它影响神经生理参数，包括应激的行为和知觉。
2·Effects of hormone dosage, interval time of hormone injection, oestrus period, season and temperature influenced on mouse superovulation were studied in this experiment.
分析了激素剂量、激素注射间隔时间、发情周期、季节和温度对小鼠超排效果的影响。
3·Also disclosed is a method of detecting the reproductive status, in particular the oestrus cycle, of a mammal.
并且公开了一种用于检测哺乳动物的生殖状况，特别是发情周期的方法。
1·When gilts or sows enter oestrus in their reproductive cycles (about 21 days long) they are ready to be bred.
小母猪和大母猪的发情期大概是21天，这是她们的生理循环周期，准备繁殖阶段。
2·During oestrus or direct contact, panda show their likes or dislikes, their intimate through different frequencies of clicks, howls, roars, and baas.
在发情期或直接接触时，大熊猫通过发出不同频率的吱吱叫、嗥叫、吼叫、咩叫声等，表达厌恶、亲近、喜欢等各种情感。
3·The animal has arrived at oestrus, has been also block of wood eating and drinking frequently, showing such as being to fidgeting.
动物到了发情期，也是经常不吃不喝，表现得是烦躁不安。