title: Melamine residues in eggs of laying hens exposed to melamine-contaminated feed.
abstract: An experiment was carried out to determine melamine residual levels in eggs by feeding laying hens 200 or 1,000 mg of melamine/kg of diet. Each diet was offered in 3 replicate cages (10 laying hens/cage) from d 1 to 29, followed by a 9-d feeding of a withdrawal diet that contained no melamine. Two eggs were collected from each replicate cage each day for the determination of residual melamine levels after 1 d of feeding. The feeding of melamine resulted in a fast accumulation of melamine in eggs within 3 to 4 d, then maintained 2.00 to 3.88 mg/kg for 200 mg of melamine/kg of diet and 11.09 to 16.46 mg/kg for 1,000 mg of melamine/kg of diet. A withdrawal period of 4.0 d for 1,000 mg of melamine/kg of diet was required based on tolerance values established by the World Health Organization and no withdrawal period was required for 200 mg of melamine/kg of diet.
authors.affiliation: Ningbo Agriculture Products Quality Detector Center, Ningbo 315040, People's Republic of China.
authors.forename: T
authors.initials: T
authors.lastname: Yang
authors.forename: W G
authors.initials: WG
authors.lastname: Huangfu
authors.forename: Y L
authors.initials: YL
authors.lastname: Wu
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D004032:Diet / Q000662:veterinary; D004531:Eggs / Q000032:analysis*; D005260:Female; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000662:veterinary; D007669:Kidney Calculi / Q000139:chemically induced / Q000662:veterinary; D011201:Poultry Diseases / Q000139:chemically induced; D013997:Time Factors; D014227:Triazines / Q000737:chemistry* / Q000378:metabolism
chemical_list: D014227:Triazines; C011907:melamine