Number of monthly reports of anoestrus in 2009 and 2008 compared to average of 1997 to 2007.    From Wordnik.com.  [FWi - All News] Reference

The most marked change was in anoestrus reports which fell almost 50%, in complete contrast to last year when there was a marked rise in cases.    From Wordnik.com.  [FWi - All News] Reference

Even for the female in lactational anoestrus, her inter-birth interval was 49 months, meaning that she did not successfully conceive until 27 months after the birth of her previous calf, some 23 months after exhibiting false oestrus behaviours.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Whilst such hormonal changes may be the proximate cause of false oestrus events here, at least three different abnormal hormonal mechanisms must be invoked to explain the occurrence in senescent females, pregnant females, and females in lactational anoestrus.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Genuine oestrus events coincide with the oestrus of another family member only 9% of the time, which is consistent with the brief period of time that females spend in oestrus as opposed to pregnancy or lactational anoestrus: false oestrus events coincide with a nulliparous female's oestrus on at least 53% of occasions.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference