Topics:
Animal Refresher, Poultry Science
Ovulatory Cycle Length in Hen
The length of the ovulatory cycle in hen is:
- 16–18 hours
- 18–20 hours
- 24–26 hours — Correct Answer
- 26–28 hours
Explanation:
Correct Answer: 24–26 hours
The ovulatory cycle in a laying hen is 24–26 hours. This is the total time taken from ovulation (release of yolk from ovary) to oviposition (egg laying).
Time Spent in Each Part of Oviduct
- Infundibulum: 15 minutes (fertilization site; collects yolk)
- Magnum: 3 hours (albumin/egg white secreted)
- Isthmus: 1 hour 15 minutes (shell membranes secreted)
- Uterus: 21 hours (shell, pigment & cuticle secreted)
- Vagina: Holds until oviposition
Total = ~24–26 hours, which is why a hen lays roughly one egg per day. The hormone Arginine Vasotocin (AVT) from the posterior pituitary triggers oviposition.
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This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
