What is normal duration of estrus cycle in sheep?

Correct option is A

· Correct answer: (a) 16 – 19 days
· The normal duration of the estrus cycle in sheep is typically between 16 to 19 days, during which the sheep goes through reproductive changes.
Other options:
· (b) 19 – 21 days: Slightly longer than the usual estrus cycle in sheep.
· (c) 13 – 16 days: This is a shorter cycle than normal for most sheep.
· (d) 21 – 24 days: Too long for a typical sheep estrus cycle.