estrus

How To Use estrus In A Sentence

• Mares which are in the ambivalent early stages of estrus or which are mistakenly in diestrus pose a clear safety threat in close quarters. TheHorse.com News
• Female chipmunks are in estrus for 1 day a year in late April or early May.
• He said that a number of factors have shown to control the length post-partum anestrus, including the presence of the newborn calf; the age of the mother cow; and the body condition score, which is a numerical representation of the cow's physical condition. Siskiyou Daily News Homepage RSS
• Researchers in Africa have observed that bulls are always looking for mates, using smell and hearing to seek out females in estrus.
• Stem-cell-enriched CD49f hi cells amplify at dioestrus, or with exogenous progesterone, demonstrating a key role for progesterone in propelling this expansion. Naturejobs - All Jobs
• After the two months of progesterone production, the dog goes into a three to five month period where there are no reproductive hormones secreted anestrus. The Seattle Times
• Females breed when they are in estrus - a brief period of ovulation that only occurs every two years and lasts just a few days.
• 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. PLoS ONE Alerts: New Articles
• Why did human oestrus fade almost entirely away so that human beings copulate when one partner is not fertile?
• ‘When the female is in estrus, breeding bulls that are 35 to 55 years old and in their prime can be many miles away,’ Garstang said.