Genetic questions!

[Amer]

And what makes a landrace a TRUE landrace? Are Icelandic's technically a landrace? Or... are they a heritage breed? What's the difference?

Icelandics are a true landrace AND a heritage breed.
A landrace is a breed that is not standardized. Icelandics don't have a standard.
A heritage breed is a true-breeding, noncommercial breed that has been around for some years. Icelandics are a heritage breed.

 

[Gigachad poultry]

This isn't correct...

X2. It's completely off

oh dang, thanks for letting me know!

 

[Gigachad poultry]

Icelandics are a true landrace AND a heritage breed.
A landrace is a breed that is not standardized. Icelandics don't have a standard.
A heritage breed is a true-breeding, noncommercial breed that has been around for some years. Icelandics are a heritage breed.

That's so interesting!

 

[Gigachad poultry]

Sicilian Buttercup aren't spangled.

they aren't?! are they penciled? barred? i am confusion

If you breed a silver based bird to a gold based bird all female offspring will be whichever the father was and all male offspring with be silver/gold.

I was wondering about that!

If you cross the F1s back to the white egg breed on average 50% will carry a blue shell gene and lay blue eggs and 50% will not carry a blue shell gene and will lay white eggs

hmm... very interesting! what would happen if you crossed the F1s back to the blue egg parent? 100% blue eggs?

 

[Gigachad poultry]

I don't know if Anconas are silver or gold based but they are extended black based.

I'm like 99% sure they're silver but I might be wrong

Sicilian Buttercups is autosomal barred, which just like spangling, is not a simple dominant gene, but rather a phenotype comprised of many genes working together. Regardless, they are partridge based.

That's so interesting! What do you think would happen if I crossed Buttercup hens to a Egyptian Fayoumis rooster? I can't tell if they're barred or not... maybe they're autosomal barred too?

Extended black is dominant over partridge, therefore, the chicks will be black with gold, or golden, or silver leakage depending on if Anconas are gold or silver based.
Obviously they won't be mottled because as you have said, the mottling gene is recessive.

That's awesome to know, thanks!

 

[Gigachad poultry]

If i crossed a Dorking rooster with the broody gene to a hen of a non broody breed like a leghorn then will the offspring be more likely to go broody or would that only happen if the mom carries broody genetics?

 

[The Moonshiner]

Has said rooster with the broody gene hatched chicks before?

 

[Gigachad poultry]

Has said rooster with the broody gene hatched chicks before?

oh no, i mean like in a fake scenario! I'm honestly a bit confused about how broodiness works... some say it's entirely possible for something like a leghorn to have a higher chance of going broody if it was originally hatched under a broody hen like a silkie for example. not mixed... but born into a life with a broody hen.

but then other people say it's entirely genetical... but idk how accurate that is

 

[Smoky joe]

So over the past few months I've learned a TON of new stuff about poultry genetics... and I won't and never will say I'm 100% right about any of it, but I'd still consider myself fairly knowledgeable... that being said... during my research I've had some questions recently and thought I might as well ask if anyone knows the answers!

To begin with... what would happen if I crossed a Spangled bird like a Sicilian Buttercup hen for example, to a mottled rooster like an Ancona? I'm pretty sure Spangle is a dominant gene and mottling is a recessive gene... but would the general pattern in the feathers change at all? and since Sicilian Buttercups carry the gold gene and Anconas carry Silver then would it be possible for some of the male offspring to be Heterozygous Silver split to Gold?

Another thing I've been wondering is what would happen if I crossed a Cream Legbar rooster to a hen from another breed that laid white eggs? Blue is dominant over white, right? So if all F1 pullet offspring lay blue eggs... and I crossed them back to a rooster of original breed that their moms were to reinforce the look of the breed... would the F2 pullets still all have the gene for blue eggs? I know that if the gene for blue eggs is crossed with the white egg gene then the pullets will end up laying much lighter eggs... but is it possible that they return to being completely white?

And what makes a landrace a TRUE landrace? Are Icelandic's technically a landrace? Or... are they a heritage breed? What's the difference?

I need some of that fellow bird nerd knowledge y'all!!!

If the Ancon chicken is black, i.e. based on extended black, you won't see it. You will get black offspring that go pattern and dark brown, which is in the Sicilians, cannot show up in black, so you have to draw at least one F2 to get back to the original colors. Mottled will only show up a little in the tips of the feathers.

 

[Smoky joe]

That's so interesting! What do you think would happen if I crossed Buttercup hens to a Egyptian Fayoumis rooster? I can't tell if they're barred or not... maybe they're autosomal barred too.


When you cross Fayomi ore Brakel with Butercubs, the F1 will be like Fayony. I cross Butercubs with Brakel and all chicks are like Fayomi Brakel. Berken is autosomal dominant over pardrige.