Which hormone surge directly triggers ovulation in a laying hen?
Correct answer: D. Luteinizing hormone
- A. Follicle-stimulating hormone
- B. Progesterone
- C. Prolactin
- D. Luteinizing hormone
Explanation
A preovulatory surge of luteinizing hormone causes the mature ovarian follicle to rupture and release the ovum. Follicle-stimulating hormone supports follicular growth, while prolactin is mainly associated with broodiness.
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