Per Resolution, link:
https://www.backyardchickens.com/forum/viewtopic.php?id=278349&p=6
The gist of what has been written is this. If you want to increase the egg pigmentation of your Malay ( should produce darker redder eggs than it does, due to incorrect breeding) Penedesencas, Marans, Wellsummer, Barnsevelder you need to practice Backcrossing. * as defined in earlier writings on this post.
Start with a female line that you know absolutely are full sisters. Save one or two of their full brothers.
Locate an unrelated rooster that you have personally hatched from a dark egg.
Pair this rooster with the first female from your well represented female line.
Select out the darkest eggs from her first clutch.
Hatch them. Select the rooster from this clutch that has hatched from the darkest egg.
Breed him back to his mother.
Repeat the process again and again for 8 consecutive generations.
If for some reason the original matriarch dies, replace her with her closest relative.
Her full sister is the best candidate but remember- you are taking two to three steps back everytime you outcross to even a related female.
Once you have arrived at the eighth generation, you can now breed the progeny interse, that is brother to sister.
Or, better yet, breed them to the close relatives of the mother. You can keep any of the birds not used for breeding but I would send them off to save room and prevent confusion.
You really want to just be as conservative as you can be. This means you set up separate enclosures. Your breeders don't get to run loose. You have to feed them like wild junglefowl and care for them as if they are delicate hot house flowers. This means no crumbles, no mashes no pellets- just whole grains and an animal protein infused pellet.
Mazuri makes an exotic pheasant extruded kibble and of course my company makes an extruded zoo pellet that's 70% more nutritious.
The French feed cockles as their mystery ingredient and lots of crustacean meal- pieces of shrimps and such left over from cooking -so close to the sea.
But for you - inland its too risky to put out material that may become a disease vector. Great genetics help. You can nevertheless, select breed towards that point using blegh stock.
We've experimented with different breeds and it is almost always the same result. We end up with better egg shell colour when we backcross- provided that is what our founders -that's the trait we are isolating and encouraging through selective breeding.
http://i9.photobucket.com/albums/a83/Pi
breast.jpg
Yes- each generation of roosters is another generation bred back to the original matriarch. By the 8th generation his mother will also be his great great great idk how many grandmother.