1. 狂蝇属：家畜的蝇蛆病主要有狂蝇属(oestrus)蝇的幼虫寄生于羊鼻道及其附近腔窦引起的羊狂蝇蛆病;麻蝇属(sarcophaga)污蝇属(wohlfahrtia)、丽蝇属(calliphora)及绿蝇属(lucilia)等蝇的幼虫寄生于多种动物伤口组织引起的伤口蛆病;
2. 动情期：oestrum 动情期 | oestrus 动情期 | of perceptual knowledge 感性认识阶段
3. 牛虻：oestrum 发情期 | oestrus 牛虻 | of a day 短命的
4. 发情：oestrous cycle 发情周期 | oestrus 发情 | offal 杂肉
1. Female pandas normally reach oestrus at the age of four or five and have only one chance of conceiving in a year.