estrous cycle

(redirected from Oestrus cycles)
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estrous cycle

The recurrent set of physiological and behavioral changes that take place from one period of estrus to another.

es′trous cy`cle

a series of physiological changes in sexual and other organs in female mammals, extending from one period of heat to the next.

es·trous cycle

The series of bodily changes that occur in the female of most mammals from one period of estrus to another. The estrous cycle usually takes place during a specific period known as the breeding season, which ensures that the young are born at a time when the chance of survival is greatest. The length of the cycle varies from species to species.
References in periodicals archive ?
You can prevent her from having her oestrus cycles by getting her neutered at your local vet.
In the same period conception rates have fallen by 1% a year, irregular oestrus cycles have increased from 32% to 44%, teat end milk flow rates have doubled and the chance of mastitis has increased by a massive twelvefold.
And in three mated oestrus cycles, the number that conceived has gone over 90 per cent.