I've decided to try breeding some Chocolate Marans. It seems like a cool project. So far I have hatched 11 chicks from my Chocolate Orpington rooster and Black Copper Maran hen. Three chicks are chocolate, 8 are black. Does anyone know if the sex link guidelines for chocolate and black genes are the same for Marans as they are for Orpingtons? If they are, then my chocolate chicks would be pullets and my blacks would be cockerels. That's a lot of cockerels. I think that the next step would be raising the chocolate hens and mating one with a pure Black Copper Maran Rooster in hopes of getting a 75% Maran split color roo that could be bred with a chocolate hen etc. How high of a ratio of Maran vs Orpington parentage would I need to get before the chicks could be considered to be Marans? Has anyone else been working on this that already with Chocolate Orpingtons and Black Copper Marans?
Yes chocolate works like chocolate it doesnt matter what breed its on.
Yes your chocolate chicks are pullets and black chicks are cockerels.
What I would do is....
Breed your chocolate pullets to a pure BCM. You will get black pullets and black split to chocolate cockerels (75%)
Keep split cockerel and breed to BCM hens. About half the pullets will be chocolate (87.5%)
Breed chocolate pullet to BCM rooster. All cockerels will again be splits (93.75%)
Breed split cockerel to BCM hens. Half pullets will be choclolate (96.875%)
Breed chocolate pullet to BCM rooster. Cockerels will again be splits (98.4375%)
Now I would breed best couple of those cockerels back to best chocolate pullets from generation before. Half pullets will be chocolate and half cockerels will be chocolate (97.65625%) then keep breeding the chocolates with best type and egg color.
I kept it simple with calling them all black but of course along the way you should get black, black with leakage and black copper. Of course also be using the ones that are BC or closer to it whenever they start showing up.
Ive done chocolate projects and used blacks to improve chocolates but never worked with chocolate and BC so not expert on how much it will take to get back to the nice BC pattern.
Also I used a gold based chocolate so everything was gold based. I know some blacks are silver based so would assume some chocolates may also be. If so you have to work with the gold base and breed out tbe silver base.
As far as getting back to pure marans thats on you to decide. Ive always figured by 6th generation youre there or really close. Some will claim that they will never be pure ever. Ive also bought from breeders that believed they were to pure when they produced offspring that were all over in type so some jump the gun IMO.
Its up to you and also depends what the two breeds crossed were and how well you did in selecting for type. Of course two breeds that are simular will get there usually quicker then two breeds that are very different. Selection of breeders for each generation will make or break you IMO.
Hope that helps and again thats how I would do it but theres other ways to get there.