title: Controlled photoperiodic environments for food animals.
mesh_terms: D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D000829:Animals, Domestic / Q000502:physiology*; D001947:Breeding; D002417:Cattle; D002645:Chickens / Q000502:physiology; D004531:Eggs; D004971:Estrus / Q000528:radiation effects; D005260:Female; D012739:Gonadal Steroid Hormones / Q000528:radiation effects*; D008027:Light; D008297:Male; D008892:Milk; D010060:Ovulation / Q000528:radiation effects; D010507:Periodicity; D011247:Pregnancy; D012098:Reproduction / Q000528:radiation effects
chemical_list: D012739:Gonadal Steroid Hormones