The estrus cycle in the ewe occurs every 17-21 days. The estrus cycle, also known as the reproductive cycle, is the recurring process of sexual readiness and fertility in female animals.
In the ewe, the estrus cycle lasts an average of 17-21 days, but can range from 14-19 days in some cases. During this time, the ewe undergoes several hormonal changes that prepare her body for mating and potential pregnancy.
The estrus cycle is divided into four stages: proestrus, estrus, metestrus, and diestrus. During estrus, which lasts for approximately 30 hours, the ewe exhibits physical signs of sexual readiness such as restlessness, mounting other animals, and vocalization. This is the optimal time for breeding, as the ewe is most likely to conceive during this stage.
In summary, the estrus cycle in the ewe occurs every 17-21 days, and during this time, the ewe undergoes hormonal changes that prepare her for mating and potential pregnancy. Estrus, the optimal time for breeding, lasts for approximately 30 hours.