Working out which sow is in oestrus can take up to a third of a pig farmer's day.
From the newscientist.com
Ideally they should have had two oestrus cycles before the start of the breeding season.
From the thisisbristol.co.uk
During oestrus, females undergo a swelling of the perineal tissue lasting 10 to 20 days.
From the en.wikipedia.org
The animals were also more sensitive to benzodiazepines during oestrus.
From the newscientist.com
The one technique we didn't have was the ability to calculate oestrus timing as precisely as they did.
From the newscientist.com
The females are typically in oestrus for only one day a year.
From the newscientist.com
Most don't come into oestrus until they are 15 months old.
From the newscientist.com
Mice in oestrus needed only a small dose of buspirone.
From the newscientist.com
Pheromones are also used in the detection of oestrus in sows.
From the en.wikipedia.org
More examples
Estrus: applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
Type genus of the Oestridae: sheep botflies
The estrous cycle (also oestrus cycle; derived from Latin oestrus and originally from Greek u03BFu1F36u03C3u03C4u03C1u03BFu03C2 meaning sexual desire) comprises the recurring physiologic changes that are induced by reproductive hormones in most mammalian therian females. Estrus cycles start after sexual maturity in females and are interrupted by anestrous phases or pregnancies...
A biting fly of the genus Oestrus; a botfly; A bite or sting; A passion or frenzy; A female animal's readiness to mate; heat, rut
Alternative form of oestrus
Period of time when a female hamster will accept mating.
The period during which a female animal will mate for breeding purposes.
The periodic state of sexual excitement in the female of most mammals, excluding humans, that immediately precedes ovulation and during which the female is most receptive to mating; heat. Also known as estrus.
A short (5-60 days) reproductive cycle, during which ovulation takes place, in sexually mature mammal species. Mating usually takes place during this period. [3: oestrus cycle ]; [3: oestrus ] [3: ovulation ];