Here's why:
* Light Cycle: Cattle are sensitive to the amount of daylight they receive. As days get longer in the spring, it triggers hormonal changes that lead to ovulation and the ability to become pregnant.
* Breeding Season: The typical breeding season for Angus cows is in the fall (September-November), with calves being born in the spring. This allows calves to be born during the warmer months when there is more pasture available.
However, there are ways to manipulate the breeding season:
* Artificial Lighting: By manipulating the amount of light cows receive, farmers can potentially induce ovulation outside of the normal breeding season.
* Hormonal Treatments: Hormones can be used to synchronize ovulation, allowing for controlled breeding outside of the normal season.
In general, though, Angus cows are not naturally able to become pregnant all year round.