title: The effect of feeding melatonin during late summer on the onset of the breeding season of sheep.
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D001947:Breeding; D004971:Estrus / Q000187:drug effects*; D005260:Female; D008550:Melatonin / Q000494:pharmacology*; D010060:Ovulation / Q000187:drug effects*; D011247:Pregnancy; D012621:Seasons; D012756:Sheep / Q000502:physiology*
chemical_list: D008550:Melatonin