title: Extensive study to examine egg-laying hen housing.
authors: Greg
authors: G
authors: Cima
mesh_terms: D000827:Animal Welfare / Q000592:standards*; D000818:Animals; D002645:Chickens / Q000502:physiology*; D005260:Female; D019649:Food Industry; D006799:Housing, Animal / Q000941:ethics / Q000592:standards*; D015337:Multicenter Studies as Topic; D010058:Oviposition; D010063:Ovum; D014495:Universities