estrus 是什么意思

	n. 【动物；动物学】发情期。

applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
同义词：oestrus, heat, rut,

	1.	A cow's estrus cycle averages 21 days . 母牛的发情周期平均为21天。
	2.	The next estrus was delayed . 下一次发情推迟了。
	3.	In cows and many other animals, the female is in estrus just before ovulation . 母牛和许多其他的雌性动物都正好是在排卵前发情。
	4.	Synchronized estrus disposal of recipient on sheep embryo transfer 绵羊胚胎移植受体同期发情处理技术研究
	5.	During estrus , the female is fertile and will accept a male 在发情期，母犬可以接受交配并且具有生育能力。
	6.	Estrus recurs at intervals of approximately six months until late in life 从一个发情期至第二个发情期之间约为六个月。
	7.	Study of reproductive hormone on the synchronization of estrus of small - tail sheep 应用生殖激素对小尾寒羊同期发情效果研究
	8.	Study on endocrine basis of prolificacyand non - seasonal estrus in small tail han sheep 小尾寒羊高繁殖力和常年发情内分泌机理的研究
	9.	Typically , it occurs about 1 to 2 months after estrus , or when the cat comes into heat 母猫在进入发情期后的一到两个月，或者是开始发情时，特别容易出现这种病症。
	10.	A female comes into estrus a week or two after giving birth and , if she is not fertilized then , again about a month later 生产后的雌马会在1 ~ 2周后进入发情期，如果这段时间没有怀孕，大约一个月后会再发情一次。

estrus是什么意思