Chooks man has advised us to avoid breeding a male with white ear lobes. He will pass the trait on to his progeny. You want solid red ear lobes, especially on your male breeder. One or two of my original hens has white ear lobes and they havent produced any white ear lobed offspring that I can see so far. But the original cock birds both had red ear lobes.
@Chooks man will have more info for u.
I have to clear this point . it is not much know about it . earlobe color .
the gene /genes responsible for it are not know to us . they do not exist in any chooks genes map. no any chicken chicken calculator ( as far as I know ) has them in they genes table .
what we know come to us from a small study done by a small group of researcher , and they did go as far as producing the F2 generation .
what they did find out was interesting ,because the cross they made between the white earlobe and the red earlobe did not produce the same result in the F1 generation , a lot variation .
the same thing happen when they produced the F2 generation .a lot variation .
so the conclusion was ;
White earlobe and Red earlobe are not caused by a single gene , must be a group of genes in play .
there is not Dominance between this two ( White earlobe /Red earlobe ) , what they find out is .the modern chooks are divided to 4 different classes .
1) White earlobe .
2) Red earlobe
3) Mostly white ( predominantly white)
4) Mostly red ( predominantly Red )
the study shown as well there is some sex linked relation in there ,but not fully understood . a lot of Autossome genes involved .
So we have to know how much white is in our chooks earlobe?
White .mostly white.Red . mostly red .
if they are mostly red ,than they are easy to breed out . we have to cross them to a pure red earlobe strain or line to fix that .cockerel or pullets ,sex linked genes influence is very small .
if they are white or mostly white ,than they are a cull . never come out of it .
I sound terrible .like a made scientist .
i like comment and see photos of a marans chooks .BUT we have to learn the secret of the tread .
chooks man
PS I ll post my own study with photos in this subject , need more time .