title: Altered yolk structure and reduced hatchability of eggs from birds fed single doses of petroleum oils.
abstract: Yolk deposited by Japanese quail was abnormal for 24 hours after the oral administration of a single capsule containing 200 milligrams of bunker C oil. Both the structure and the staining properties of the yolk were affected. Fewer eggs were laid during the 4 days after dosing, compared to controls, and hatchability was drastically reduced. Hatchability returned to normal in 4 days. Three other reference oils also affected yolk structure. Canada geese given 2 grams and chickens given 500 milligrams of bunker C oil produced eggs with abnormal yolk rings.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D002645:Chickens; D003370:Coturnix; D004530:Egg Yolk; D005260:Female; D005648:Fuel Oils / Q000633:toxicity*; D005777:Geese; D009866:Oogenesis / Q000187:drug effects*; D010578:Petroleum / Q000633:toxicity*; D012098:Reproduction / Q000187:drug effects*
chemical_list: D005648:Fuel Oils; D010578:Petroleum