Sooo, I’ve been thinking. MMMs are an F1 sex-link hybrid between BC Marans and Barred Rock, right? But I heard somewhere that the really dark-dark brown egg genes are mostly recessive.
So, you generally wouldn’t see those genes expressed in a first generation hybrid, even if your girls were carrying them, right? You’d have to back-cross to BCM or cross two F1 hybrids to see the dark-chocolate egg gene turn up in the next generation- but that loses the sex-link because the barring has to come from the hen side for that to work, iirc.
So, selling a first-gen Marans cross is a little misleading, because people hear “Marans” and think “dark eggs,” but that’s not probably what they’re going to get without some back-crossing in the breeding, right?
… Is there anyone doing a project like that? Back-crossing F1 MMMs to get sex-linked dark egg layers- though it’d have to be, what, every other generation, wouldn’t it, because of the barring swapping sides from the sex-link cross. How would one go about that?
(I’m very new to the topic of chicken breeding. There are so many genetic puzzles I just want to poke with a stick.)
And m France they are breeding a hybrid called a Noirans, not sure about sex-linked or autosexing/feather sexing.
But Hendrix Genetics is working with this project and supply the birds here in Canada. Not sure about in the US.
https://layinghens.hendrix-genetics.com/en/our-brands/special-layer-breeds/noirans/
They lay very dark eggs.
I have four young pullets about 13 weeks old, they should be laying in the New Year.
Virginie
Odett
Giselle
Vera
I think…. Likely have them mixed up
