Whats the difference between Cuckoo and Barred?

[Chris09]

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What's a BSL?

Genetic 101 ala Marvin...

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you have it the other way around..

you seem to know that Barring(B) is a Sex linked gene, but in this case Birds( fish and crustaceans,some insects and some reptiles) Males(roos) are the Homogametic ones(ZZ) and hens are Heterogametic ones(ZW) meaning males can have 2 copies of the berring gene and females can only only one.. or none if the rooster does not carry Barring...

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Barring is a Dominant gene so if you can't see Barring on black or colored birds that means is not there, but it could be hidden on white birds, like production white leghorns

I hope that helped..

Edit..
Illia always beats me to it.. I'll never be an educator that way..

Depends on the Breed,
Barring as in the Barred Rock, Dominique and Cuckoo patterned breeds (Cuckoo is considered " "Irregular" or "Smutty" Barring) is Dominate sex-linked with the restriction of Black pigment in the bars.
Barring as in the Hamburg and Campine is a Recessive Autosomal (non-sex-linked)

Chris

 

[Sonoran Silkies]

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B/B crossed to b+/- will give B/b+ males & B/- daughters Since they will all have one copy of barring, you cannot tell the males from the females based upon barring.

Ok this is what i am understanding.... The pullets would be ok to breed and would breed true(barring or not because they only carry one copy). The roos would always NOT breed true for barring from a BSL roo. Even if breed to a barred hen because only half of the roos would have B/B the other half would be B/- and only test mating would show if barring in the roo was B/B.

Got it! I will not be able to use the Barred roos from this cross for barring!

No, at hatching you will be able to tell which are B/B boys. What you will not be able to distinguish is the B/b+ boys from the B/- girls. At maturity, the B/B boys will be much lighter, the birds with only a single copy will all be darker.

 

[nicalandia]

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Nothing Recessive about autosomal Barring... Pg, Db..

 

[Chris09]

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Nothing Recessive about autosomal Barring... Pg, Db..

Do you have a link that states that Autosomal Barring isn't Recessive?
I know breeders of Hamburgs and Campines that state that it is Recessive, even the APA states that it is Recessive and Autosomal.

Chris

 

[nicalandia]

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Nothing Recessive about autosomal Barring... Pg, Db..

Do you have a link that states that Autosomal Barring isn't Recessive?
Chris

Genetic 101

Autosomal Barring is not a single gene, but a interaction of Domiant genes(Db and Pg) as Tim described but it can also be based on Gold(s+)

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here is a nice reading from Poultry Breeding and Genetics book by R. Crawford
http://books.google.com/books?id=VMSF7m2CFTEC&lpg=PP1&pg=PA129#v=onepage&q=autosomal barring&f=false

the only difference between Autosomal Barring and Spangling is the addition of Melanotic so Silver Spangled Hamburg is S/S Db/Db Pg/Pg Ml/Ml

here is pic

from this nice genetic site from my friend KazJaps
http://chickengenetics.edelras.nl/

 

[stephanie1992]

so are golden campines and buttercups barred?

 

[nicalandia]

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Sex linked Barred? NO...

Autosomal Barred? Yes..!

please read above posts

 

[Chris09]

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Do you have a link that states that Autosomal Barring isn't Recessive?
Chris

Genetic 101

Autosomal Barring is not a single gene, but a interaction of Domiant genes(Db and Pg) as Tim described but it can also be based on Gold(s+)

Quote:
here is a nice reading from Poultry Breeding and Genetics book by R. Crawford
http://books.google.com/books?id=VMSF7m2CFTEC&lpg=PP1&pg=PA129#v=onepage&q=autosomal barring&f=false

the only difference between Autosomal Barring and Spangling is the addition of Melanotic so Silver Spangled Hamburg is S/S Db/Db Pg/Pg Ml/Ml

here is pic
http://i1085.photobucket.com/albums/j437/nicalandia/AutosomalBarring.jpg

from this nice genetic site from my friend KazJaps
http://chickengenetics.edelras.nl/

So what would you call the Barring that is found on Hamburg, Campine, Fayoumi and buttercups then, would it be a Incomplete Dominate like Dark Brown and the Barring found on Plymouth Rocks, Dominique and Cuckoo patterned breeds?

I know that Autosomal Barring can be,
Hamburgs - e^b Pg Db
Fayoumi - E^r Pg Co Db
Buttercups - e^bc Pg Db


Chris

 

[nicalandia]

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it could be the case of Incomplete Penetrance...

 

[stephanie1992]

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Sex linked Barred? NO...

Autosomal Barred? Yes..!

please read above posts

i did read the posts above ...i was just comferming it...i wanted to make sure