Question

In absence of male, the estrus of female camel may last for

• A. About 1 week
• B. About 2 weeks
• C. About 3 weeks
• D. About 4 weeks

Hint:

Camels are induced ovulators. Because they require coitus to ovulate, unmated female camels experience distinct follicular waves where behavioral heat (estrus) typically lasts for about 3 to 7 days (1 week).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Camels (including dromedary and bactrian camels) are induced ovulators.
In these species, ovulation does not occur spontaneously during the estrous cycle; instead, it must be triggered by coitus (mating) or the administration of GnRH/LH analogues.

Step 2: Detailed Explanation:
When a female camel (she-camel) enters the follicular phase, a follicle matures and begins secreting estrogen, inducing behavioral estrus (heat).
In the absence of a male camel (no copulation), there is no LH surge to trigger ovulation.
As a result, the mature follicle remains in a static, fully developed state for several days before eventually undergoing gradual regression (atresia).
During this follicular wave cycle:
- The active estrus phase (the period during which the she-camel shows behavioral receptivity and signs of heat) lasts for approximately 3 to 7 days (about 1 week).
- If mating does not occur, the follicle regresses over the next 7--10 days, leading to an interestrus period before a new follicular wave begins.
Therefore, in the absence of a male, the active behavioral estrus of a female camel lasts for about 1 week.

Step 3: Final Answer:
The estrus of a female camel in the absence of a male lasts for about 1 week, corresponding to option (A).