Author Topic: Eggs with 2 yolks not so unusual for hens  (Read 2650 times)

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Offline TheOldBuzzard

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Eggs with 2 yolks not so unusual for hens
« Reply #1 on: March 12, 2012, 04:05:45 AM »
Eggs with 2 yolks not so unusual for hens

Written by
David Burton

Every week our office gets an odd agriculture-related question or two. Staff members may not have the answer immediately but we can generally point people to the right information. I thought I’d share a couple of examples this week.

Q: I just cracked two eggs for breakfast and both of them had double yolks in them. What are the odds of that happening?


A: According to Jess Lyons, a poultry specialist with MU Extension, double-yolk eggs are relatively common for young pullets just starting to lay.

The first eggs laid by a pullet are smaller (USDA size small) in size. The double-yolk egg will be larger than the other eggs, and might reach the large to extra-large weight class.

“I can usually identify these eggs visually, even without candling by its size as compared to the other eggs laid by the pullets at the same age. Double-yolk eggs are normally proportionally longer from large end to small end than single yolk eggs of the same weight. I suspect the pullet will not lay an egg the next day following the laying of a double yolk,” said Lyons.

As for the odds of this happening, the American Egg Board says double-yolked eggs are most often produced by young hens.

“However, they can also be produced by hens that are old enough to produce extra large-sized eggs. Genetics is also a factor. Occasionally a hen will produce double-yolked eggs throughout her egg-laying career.”


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