feable estrus

例句：

1. 1.The feable estrus of the sheep is a critical period for disease prevention.
   羊的易感期是疾病预防的关键时期。
2. 2.During the feable estrus, the female sheep are more susceptible to diseases.
   在易感期，雌性羊更易感染疾病。
3. 3. Farmers need to monitor the feable estrus of their livestock to prevent outbreaks.
   农民需要监控牲畜的易感期，以防止疫情爆发。