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Copper sulfate toxicosis in commercial laying hens
R W Gilbert1, J E Sander, T P Brown
1Department of Avian Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602-4875, USA.
Avian Diseases
|January 1, 1996
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.