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Illinois Livestock Trail by UNIVERSITY OF ILLINOIS EXTENSION


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QUESTION
I know that eggs are laid through the vagina via a vent to the outside of the hen's body. Is this separate from the anus of the chicken? My husband contends that the egg is passed through the anus. I don't believe that to be true,but I can't find a diaghram or chart. Thanks


ANSWER

Eggs are laid and exit the vagina via the vent which is on the outside of the bird. The feces with uric acid enter the cloaca (sewer) then expells it outside. When the hen lays an egg she everts the cloaca to seal off or close the cloaca before laying so no contamination of the egg occurs.

Ken Koelkebeck Extension Specialist, Poultry







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