1. Female mice housed together tend to go into anestrus and do not cycle. 2. It is also used for treating of postweaning anestrus in economically important farm animals. 3. Anestrus is the period of reproductive quiescence.4. Anestrus generally lasts four to five months.5. Horses mate in spring and summer, autumn is a transition time, and anestrus rules the winter. 6. As the days shorten, the mare returns to the anestrus period when she is not sexually receptive. 7. Most mares enter an " anestrus " period during the winter and thus do not cycle in this period. 8. If females fail to farrow despite being anestrus and are sent to an abattoir, their uteruses should be collected and examined for affected fetuses. 9. As the days shorten, most mares enter an " anestrus " period during the winter and thus do not cycle in this period. 10. Dams may return to estrus, fail to farrow despite being anestrus , farrow few pigs per litter, or farrow a large proportion of mummified fetuses.
