Altered yolk structure and reduced hatchability of eggs from birds fed single doses of petroleum oils

Science  25 Feb 1977:
Vol. 195, Issue 4280, pp. 779-781
DOI: 10.1126/science.836586


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.