Question

In cows, which phase of oestrus cycle is of shortest and of longest duration

• A. Oestrous and Dioestrus, respectively
• B. Oestrous and Metestrus, respectively
• C. Proestrus and Dioestrus, respectively
• D. Proestrus and Metestrus, respectively

Hint:

- Estrus (shortest): 12--18 hours, dominated by estrogen (standing heat).
- Diestrus (longest): 10--14 days, dominated by progesterone (fully functional CL).

Answer 1

The Correct Option is A