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- #31
Leighe
Songster
Leighe,
The answer to your question is both yes and no. In order to be considered a true Marans, regardless of color variety, a Marans Hen must lay a minimum #4 colored egg or better on the Marans Egg Color Chart. Anything less than #4 the hen is not considered a true Marans even though her parentage is Marans. When a Pullet first starts to lay collect her first 30 eggs, record the color of each egg then take the average to determine what color egg she consistently lays. Remember that a Marans Hen egg color will lighten naturally during a complete laying cycle but should never fall below a #4.
Dark Egg Genetics in Marans is very complicated and generally the least understood part of the Marans. What is known is that there are more than a dozen genes involved in Marans Dark Egg Genetics and both the Rooster and Hen carry these genes and are equally important in a breeding program. We can see in the Marans Hen if she carries dark egg genetics based on the color of her eggs. However, since the Rooster does not lay eggs it's much harder to determine if he carries dark egg genetics. You can test a Marans Rooster by mating him to a white egg layer such as a leghorn. If the pullets from this mating lay a tinted egg then he carries the dark egg genetics. Also, if a Rooster is hatched from a dark egg then he likely carries the dark egg genetics but the only way to truly know is to test mate as previously indicated.
Also the concentration of the dark egg genetics varies from Marans to Marans which is why some hens lay #4 dark egg and another lays a #8 dark egg. There are a lot of great articles on Maran Eggs genetics on the various U.S. and French Marans Clubs websites that give a much more detailed and technical explanation.
Take Care,
Keith