Hi,
According to Van Dorn and Hancock's book, Genetics of Chicken Colours-The Basics, (pages 206, 207) the Speckled Sussex color genotype in the USA is:
Red Mille Fleur which is e+/e+ s+/s+ Mh/Mh mo/mo (with 'rb' added for the very dark birds). rb= recessive black.
The book says Red Millie Fleur is the same as Mille Fleur with Mahogany, (with 'rb' added for the very dark birds).
Best Regards,
Karen
P.S., I wondered where the chipmunk stripes were coming from in the Speckled Sussex chicks. e+/e+ s+/s+ is wildtype, which is the chipmunk-striped chick,
that explains it. So Speckled Sussex is wildtype with the Mahogany and mottled genes added. The genotype is different in Australia, Europe and the UK.
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