英语语法分析

Effects of different nutrition levels on oestrus time of over-early weaning ewes;

实验模拟了不同风浪强度、不同营养水平下铜绿微囊藻的生长速率。

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。

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。