The Plymouth Rock Breeders thread

[tigercreek]

I think all barred hens are single barred, that's why you can make sex links when bred to a solid colored male....

 

[Egghead_Jr]

I think all barred hens are single barred, that's why you can make sex links when bred to a solid colored male....

Exactly. All barred/cuckoo females only can carry one copy and for some reason it's only given to male offspring. This male being a single copy carrier of barred will only give it to the pullet 50% of the time.

 

[DMRippy]

I think all barred hens are single barred, that's why you can make sex links when bred to a solid colored male....

Yes hens can only have one copy. Properly barred roos should have 2 copies.




I need one of these for barring......

Barred hen covered by solid roos (no barring) will produce Sex Links. Barred roos solid pullets
Barred hen covered by single barred roos will produce 50% double barred roos 50% single barred roos. 50% pullets with barring and 50% solid pullets.
Barred hens covered by double barred roos will produce 100% double barred roos and 100% barred pullets.

 

[speckledhen]

It is your roo with one copy of the barring gene. Hens pass it off to just roos roos pass off to all chicks and since he just has one copy only half are getting the starring. Those are pullet if all the hens are barred. But you are getting some males so must have some none barred hens too. Splash can ONLY make blue chicks. No blacks ever from a splash.

I don't see how that's possible. Have had it happen at least twice with a splash hen and a Delaware male. Once with a splash Ameraucana and once with the same splash Rock and a Delaware male.

A single barred male over a barred hen can produce blacks because the hen is also single barred....

Ok, wasn't expecting that with my BR hens, only with my solid hens.

Yes it does. A single factor barred male will only give barred to the pullets 50% of the time. Therefore the one barring gene placement a pullet can carry is either barred or not. 50% of the time it will be blank so pullet will be black.

I was aware of that with my male, so if these are truly my Rex over the Stukel BR hens, not the splash, then that means that the two solid blacks are definitely pullets? That would be good, certainly.

Another question for you then, if you guys don't mind. I know for 100% sure that this chick came from my Splash Rock hen because I saw her lay the egg and was only collecting from my blue and splash hens for the D'Anver broodies that were coming out of my ears. The sire of this chick was my Delaware X cockerel who was recently rehomed since couldn't be Rex, obviously, nor my EE cockerel. The Dellie X's own mother was the red hen previously mentioned, but he appeared pure Delaware other than stray red feathers. So, if my splash only produces blues, why is this chick the way she is? At least, I'm fairly sure it's a pullet at 8 weeks in spite of some pink in the comb. Pullet body, average size legs, etc. She almost looks mottled.

Had another incidence of a splash hen (Ameraucana, this time) with a Delaware male producing a black barred EE male. No question about that egg, either. We puzzled over that one with the genetics calculators forever.







This male came from a small hatch of my BBS Ameraucanas, the only one ever fertile out of my Splash Ameraucana hen, Snow. His sire was my Delaware rooster, Isaac. There is ZERO question about the egg-it was Snow's light blue egg. My Ameraucanas are 6 years old and rarely lay and my friend incubated these, not expecting Snow's to be fertile, but one was and hatched this male, definitely NOT blue. And before you ask, Snow is not light blue. She's most definitely Splash.

 

[DMRippy]

The splash must be blue if she is throwing black chicks. Genetically impossible for a splash to throw blacks.

 

[tigercreek]

Exactly. All barred/cuckoo females only can carry one copy and for some reason it's only given to male offspring. This male being a single copy carrier of barred will only give it to the pullet 50% of the time.

I think that the reason that the females single barring gene is only given to the males is because it is attached to the x chromosome (sp) . That is the reason they are called sex link, because the gene is linked to the sex determining chromosome..... That's more than I know about genetics.....

 

[speckledhen]

No. They are splash, not blue, trust me. I don't believe genetics are that pat, not after seeing some of the things I've seen. Usually predictable, yes, but ironclad, no way.

Here is the splash Rock




Here is the splash Ameraucana hen.



Now, if there is some way for the blue genes to be "blocked" from passing on in some way, that would explain it.

 

[tigercreek]

No. They are splash, not blue, trust me. I don't believe genetics are that pat, not after seeing some of the things I've seen. Usually predictable, yes, but ironclad, no way.

Here is the splash Rock




Here is the splash Ameraucana hen.

Could you have a blue Del??? White covers up a lot and blue is an incomplete dominate.. pretty sure that means it can be covered by white, kind of like a second coat of paint. If the hen was splash, she had to have passed on a blue gene....

 

[speckledhen]

Could you have a blue Del??? White covers up a lot and blue is an incomplete dominate.. pretty sure that means it can be covered by white, kind of like a second coat of paint. If the hen was splash, she had to have passed on a blue gene....

Blue Delaware? I don't believe so, no. Isaac is my flock sire from back then and he was the ONLY one at that time. He comes from good breeder lines that include McDaniel and Meier and others, from Janet Holtman. No blues in those lines, I wouldn't think. I've never kept any straight Delaware males out of Isaac to breed from. I know people keep saying the splash has to pass on a blue gene, but again, I've seen things that would negate that in rare instances. Unless this Dellie colored pullet has a blue gene (and she can't or she'd be blue or splash), then her mother didn't pass on her blue gene. And I know for sure that Gloria Jean is the mother of that one and that Snow is the mother of the barred EE male. I know, it's crazy and we turned the genetics calculator upside down looking for an explanation for Storm (the black barred EE out of Snow and Ike).

Sorry for the tangent away from the PR thread, but if the blacks can be from Rex and the BR hens, then I'm thrilled because they'd be pullets. I sure didn't need any more cockerels from the BBS Rocks, have plenty of those, including blue barred. Of course, I don't really want anymore black chickens of any breed, since the barreds were my main goal. At least, they may be easier to rehome.

ETA: Thanks for clarifying that I can certainly get solid blacks from my single factored male and my BR hens. I really was not expecting that so assumed I was fooled while egg gathering to put under Dottie. I've never had a single factored male before nor have I hatched from Rex over the BR hens, either. The last eggs under the broodies were all from another pen with my blue Rocks plus a few of Gloria Jean's eggs (splash Rock) and Raven's eggs (my 1/2 Del black hen) added.

 

[DMRippy]

No. They are splash, not blue, trust me. I don't believe genetics are that pat, not after seeing some of the things I've seen. Usually predictable, yes, but ironclad, no way.

Here is the splash Rock




Here is the splash Ameraucana hen.



Now, if there is some way for the blue genes to be "blocked" from passing on in some way, that would explain it.

I would think those are blue.... light light blue but blue. Blue is a leaky gene and you can get some darker feathers in blue birds but they are not splash just because of the darker feathers. The legs on the Am tell me she is blue. Splash birds typically have WHITE legs at least for the breeds I have.

Here is a splash Marans



She is a Blue Marans



He is a splash Cuckoo Marans



Splash Plymouth Rock



Since you breed them and are getting black chicks that would confirm they are blue not splash. I have seen several birds on the Marans thread and it was unclear whether blue or splash.... test breeding is how you determine that.