oestrus

n.

发情，牛虻；动情期；

1. Him express affection calls oestrus.
   抒发自己的情感就叫发情。
2. He increased the reproduction rate of rabbits by inducing oestrus.
   他使用催情的方法来提高兔子的繁殖率。
3. 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。

Human Oestrus
Review. Human oestrus
Automation of oestrus detection in dairy cows: a review.
Nasal myiasis due to Oestrus ovis larvae in Israel.
Detection of oestrus in dairy cows: a new approach to an old problem
Identification of an oestrus-associated glycoprotein in oviducal fluid of the sheep
Roaring by red deer stags advances the date of oestrus in hinds.
Androgen steroids as an aid to the detection of oestrus in pig artificial insemination.
Collection, description and transfer of embryos from cattle 10--16 days after oestrus.
Corrigendum to "The sow endometrium at different stages of the oestrus cycle: studies on morphological changes and infiltration by c...