Sex- linked Information

[yellowsubmarine]

Could someone help me out? I need some more info.

I'm interested in crossing a Buff Orpington with a Lavender Orpington, but I don't know if the Lavender Orpington counts as a Silver genome or is it something different and unable to create a sex link with? If the Lavender is the right genome, would they make a sex link Orpington breed if I crossed them, or would being both Orpington breeds pose even more difficulties in making a sex link?

I was thinking that if it was possible to produce this breed into a successful sex link, this would be a great first time dual purpose chicken to breed and raise.

 

[dheltzel]

Lavender is extended black with recessive "self-blue" dilution, so no silver to make red sex links. If you used lavender as the male and a barred female, you could get black sex links (but no lavender would show on the F1 birds).

 

[Ridgerunner]

Lavender could have silver. I’m not sure if it really matters if it is silver or gold. The extended black should cover it up either way. I’ll agree a Lavender should be based on extended black though you could probably make lavender using birchen with melanizers. You can always make these things as complicated as you want. But anyway, it should be extended black.

One of the requirements to make red sex links is that you need to see the different shades of yellow and red in the down. With a Lavender based on extended black hen, in theory, those chicks should be solid black with a buff rooster. You should not be able to see any difference in yellow or reddish down, the down should be black. Doesn’t matter if the lavender has silver or gold.

Buff is a strange color. There are some different ways to make buff, but they usually involve diluters and gold. I think it was way back in this thread, but somewhere on this forum someone had photos of the offspring of a Buff Orp rooster over Barred Rock hens, buff over extended black similar to buff over lavender in that respect. In theory, that offspring should have been solid black or barred (they were black sex links), but they had patches of what I’ll call orange on them in the adult plumage. Some of those patches were fairly large. I don’t think he could tell any differences in the down but he got some really striking birds.

 

[dabumby]

Hi I am not sure I understand this correctly but here we go.
I have a New Hampshire rooster and if I cross it with red leghorn hens this will give me black sex linking.
Is that correct? Female chicks will be all black and male will be black with white on their heads. Correct?

 

[draye]

Hi I am not sure I understand this correctly but here we go.
I have a New Hampshire rooster and if I cross it with red leghorn hens this will give me black sex linking.
Is that correct? Female chicks will be all black and male will be black with white on their heads. Correct?

No red hens will not produce sex link chicks. Go back to the first page and re-read it in it's entireity.

 

[dheltzel]

No red hens will not produce sex link chicks. Go back to the first page and re-read it in it's entireity.

Right, the only way to produce black sex links is with a barred, extended black hen. Usually, the hen is a barred rock, but you could also use a dominique, barred holland, or california gray. The roo must not be barred or dominant white, so the New Hamp roo would work, you just need a BR hen instead of the red leghorn.

 

[cmom]

Hi I am not sure I understand this correctly but here we go.
I have a New Hampshire rooster and if I cross it with red leghorn hens this will give me black sex linking.
Is that correct? Female chicks will be all black and male will be black with white on their heads. Correct?

I have never heard of the cross you mentioned. The Black Sex-Links are produced by crossing the Barred Plymouth Rock hen with a Rhode Island Red or New Hampshire rooster. At hatch both sexes have black down, but the males can be identified by the white dot on their heads. Males feather out with the Barred Rock pattern along with a few red feathers, while females feather out solid black with some red in the neck feathers.

 

[dabumby]

My bad! I was looking at the black sex link table wrong. I was looking at the group roosters as roos and next columb as hens.

 

[Ridgerunner]

There are two requirements to make a black sex link, 1) the hen has to have barring and the rooster cannot have sex link barring and 2) you need to be able to see the spot in the down.

The chart in the first post just uses only extended black hens because all the roosters on the left have to work with all the hens on the right for that chart to work. There are many combinations that will work not in that chart because some hens will work only with certain roosters. They don’t work with every rooster. The reason they don’t work with every rooster is that with some roosters you cannot see the spot in the down, even if the barring is correct.

Extended black is a great resource for showing that spot in the down, but it does not have to come from the hen. A Black Australorp rooster over a Delaware hen should produce black sex links. I say should because I’ve never made that cross myself, so I can’t speak from experience with that specific cross. The Delaware is barred and wheaten. The Black Australorp is not barred and is extended black. The chicks will be black and you should be able to see the spot in the down. But if you cross a Delaware hen with a Rhode Island Red rooster you get a red sex link, not a black sex link, because you can see the gold/silver in the offspring and cannot see the spot. You cannot put a Delaware hen in that chart because she does not work with every rooster on the left to make a black sex link. Cream Legbars may be a better example than the Delaware for non-extended black hens that will work with some but not all roosters.

An extended black rooster will work with many barred hens to produce a black sex link chick, even if the hens are mutts. It just depends on what other genes are present and how they affect down color.

I’m not sure extended black even has to be in the mix. There are other gene combinations that should allow the spot to be identified. I haven’t had barring in my flock for several years. It’s one I choose to not work with so I don’t have a lot of experience with it. The barred part of a black sex link is easy. It’s down color and whether you can see the spot that is difficult. Birchen seems to be the worst to work with.

 

[nicalandia]

Quote:
I Disagree, Birchen is the Second best Chick down you can work with if you are doing a Barred Sexlinked cross, Wheaten is the Worst, not Birchen Birchen chicks can look quite like Extended black chicks, so the headspot will be easier to spot, unlike wheaten here french copper maran chicks https://www.backyardchickens.com/t/...ed-for-the-byc-2012-calendar/440#post_7088858