title: Copper sulfate toxicosis in commercial laying hens.
abstract: A flock of 51-week-old leghorn hens experienced a 16% drop in egg production in a single week. The layer ration contained 1477 ppm copper from the addition of copper sulfate. Severe oral ulcers were present in the pharynx. Oral ulcers, reduced feed intake, and a drop in egg production occurred when a ration containing 1437 ppm copper was evaluated experimentally.
authors.affiliation: Department of Avian Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602-4875, USA.
authors.forename: R W
authors.initials: RW
authors.lastname: Gilbert
authors.forename: J E
authors.initials: JE
authors.lastname: Sander
authors.forename: T P
authors.initials: TP
authors.lastname: Brown
mesh_terms: D000818:Animals; D002645:Chickens; D003300:Copper / Q000506:poisoning*; D019327:Copper Sulfate; D004435:Eating; D005260:Female; D009059:Mouth Diseases / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary*; D010058:Oviposition; D011201:Poultry Diseases / Q000139:chemically induced*; D014456:Ulcer / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary
chemical_list: D003300:Copper; D019327:Copper Sulfate