FOWL EGG-LAYING MODIFIER AND FOWL FEED FORMULATED WITH THE RESULTANT MODIFIER

摘要

PROBLEM TO BE SOLVED: To obtain a fowl egg-laying modifier capable of simply modulating egg-laying of fowl such as chicken, and a fowl feed, and to provide a fowl egg-laying modulating method, and a fowl egg-laying improving method capable of simply improving egg-laying of fowl such as chicken. SOLUTION: The fowl egg-laying modulating method comprises using the fowl egg-laying modifier or a fowl feed containing melatonin to modulate the blood melatonin concentration of fowl.