title: Photosensitization in ducklings induced by seeds of Cymopterus watsonii and C. longipes.
abstract: For 14 days ducklings were fed seeds of Cymopterus watsonii or C. longipes at 100 mg, 500 mg, or 2 g/kg of body weight and exposed to sunlight. Those fed C. longipes at 500 mg showed transient photosensitization. C. watsonii at 2 g induced mild photosensitization at 8 days, with consequent beak deformity and little apparent effect on the birds' health. C. longipes at 2 g induced acute photosensitization within 3 days, with consequent severe damage to the skin of the head, beak, footwebs, and legs. These birds showed extreme stunting within 8 days of first ingesting the seeds, and several weeks later were still very retarded, with severely deformed beaks and footwebs. One bird in this group died at 22 days.
mesh_terms: D000818:Animals; D001502:Beak / Q000473:pathology; D004372:Ducks; D005241:Feathers / Q000473:pathology; D010787:Photosensitivity Disorders / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D010939:Plant Poisoning / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D011201:Poultry Diseases / Q000209:etiology* / Q000473:pathology; D012639:Seeds; D012867:Skin / Q000473:pathology