The effect of visual pattern complexity of feeders on food consumption of laying hens.
D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000502:physiology*; D003118:Color Perception; D004435:Eating; D004531:Eggs; D005260:Female; D005556:Form Perception; D006799:Housing, Animal; D010058:Oviposition; D013997:Time Factors; D014796:Visual Perception