oestrus cycle 发情周期
in oestrus 处于发情期
oestrus behavior 发情行为
oestrus detection 发情检测
1. The cow is in oestrus and ready for breeding.
母牛处于发情期，准备配种。
2. Farmers often monitor oestrus cycles to optimize breeding.
农民通常监测发情周期以优化繁殖。
A: How can we tell if the sow is in oestrus?
A：我们如何判断母猪是否处于发情期？
B: She shows clear signs of oestrus behavior.
B：她表现出明显的发情行为。
1) 哺乳动物的发情期
2) 生育能力高峰期
3) 伴随特定行为表现
4) 农业和动物繁殖学中常用
1. 哺乳动物的发情期
e.g. The mare was in oestrus last week.
母马上周处于发情期。
2. 发情期的行为表现
e.g. Detecting oestrus is important for successful breeding.
检测发情期对成功繁殖很重要。
noun
1. The period of sexual receptivity and fertility in female mammals, also called heat.
Synonym: heat, estrus