The estrus period in cows is typically short, but when it lasts longer than usual, it's referred to as persistent estrus. This condition often occurs due to the continuous development of follicles on the ovaries. Initially, a follicle on one side of the ovary matures and produces estrogen, which triggers the cow to show signs of estrus. Soon after, a follicle on the other ovary begins to develop, leading to alternating estrogen production. This back-and-forth process can extend the duration of estrus significantly.
In some cases, ovarian cysts may also be responsible for persistent estrus. These cysts can interfere with normal follicular development and lead to prolonged hormonal activity. When estrus is caused by the alternating follicles, the cow might still be fertile and able to conceive if properly managed. However, if the persistent estrus is due to an ovarian cyst, early intervention is crucial. Treatment at an early stage can help restore normal reproductive function and improve breeding success. Understanding the underlying cause is essential for effective management and ensuring the cow's reproductive health.
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