The "Ask Anything" to Nicalandia Thread

[Solanacae]

I have a chick that was fathered by the white Silkie rooster pictured below. The mother is either the Cream Legbar or Ameraucana in the next two pictures. The remaining pictures are of the chick in question. She has a modified pea comb - the back of the comb sticks up a little instead of being evenly attached. Who would you guess is the mother?

 

[pipdzipdnreadytogo]

Genetics Calculator says 2 copies of the Rumpless gene is lethal .View attachment 3353817

Perhaps this is referring to what seems to be a small increase in embryonic mortality late in development. But that's with both heterozygous and homozygous individuals from what I'm reading just now, so I'm not sure if it's correct to refer to it as a lethal gene or just one that results in some slight loss of viability. This is as opposed to individuals who inherit two copies of the tufted gene being almost guaranteed to die in shell at around 17-19 days of incubation. That is what I would personally define as a lethal gene.

 

[MysteryChicken]

I have a chick that was fathered by the white Silkie rooster pictured below. The mother is either the Cream Legbar or Ameraucana in the next two pictures. The remaining pictures are of the chick in question. She has a modified pea comb - the back of the comb sticks up a little instead of being evenly attached. Who would you guess is the mother?

I believe the mother was the EE, since silkies are often partridge based, & the fact your EE is of a partridge pattern.

 

[NatJ]

when your writing out genotypes for a bird, are you writing out just the color, or the feather type aswell?

It depends on what is being discussed. Sometimes it matters to list every known gene for the chicken in question. But that gets really long, so it's common to not list the genes that aren't part of the discussion.

So for example, if someone is crossing Rhode Island Red with Barred Plymouth Rock, we don't usually list them as having normal feathering (not silkie, not frizzled), single combs (not pea, not rose, not duplex), no extra toes, no muff/beard, no crest, no feathered feet, yellow skin, and so forth. But if someone was crossing either breed to a Silkie, many of those genes become important again, and do get listed.

I would love learning more about this, are there any articles you recommend?

Here's one I have found useful:
http://kippenjungle.nl/sellers/page0.html
This page has links to three other pages: one with basic genetics, the second is a discussion of many specific chicken genes, and the third page has a table of chicken genes with notes about each one.

 

[nicalandia]

Genetics Calculator says 2 copies of the Rumpless gene is lethal .

There is a semi lethal rumpless mutation called roach back. But it's not the same as the one found on Araucanas

 

[MysteryChicken]

There is a semi lethal rumpless mutation called roach back. But it's not the same as the one found on Araucanas

I've heard of roach back, seen it mentioned somewhere as a Deformity. Didn't know it was a rumpless mutation.

 

[3KillerBs]

Here is something I ran across a while ago about the different types of rumplessness: https://www.browneggblueegg.com/Article/Rumplessness.html

It seems to be exceedingly complex:

"Rumplessness is difficult to understand because many different genes interact to determine whether a bird is rumpless. In addition, there are at least three distinct types of rumpless chickens: dominant, recessive, and accidental, and the dominant type can be divided into two types: dominant complete and dominant incomplete."

 

[Solanacae]

I believe the mother was the EE, since silkies are often partridge based, & the fact your EE is of a partridge pattern.

I’ve been inclined to think the Ameraucana/EE/whateverthemomis the parentage is, though in the basis of the beard on my EE. The Silkie father doesn’t seem to have much of one. The eggs weren’t supposed to be fertilized by the Silkie, I was getting blue-layers from this lady but the Silkie got into the breeding pen.

 

[Chicken poppy]

It depends on what is being discussed. Sometimes it matters to list every known gene for the chicken in question. But that gets really long, so it's common to not list the genes that aren't part of the discussion.

So for example, if someone is crossing Rhode Island Red with Barred Plymouth Rock, we don't usually list them as having normal feathering (not silkie, not frizzled), single combs (not pea, not rose, not duplex), no extra toes, no muff/beard, no crest, no feathered feet, yellow skin, and so forth. But if someone was crossing either breed to a Silkie, many of those genes become important again, and do get listed.


Here's one I have found useful:
http://kippenjungle.nl/sellers/page0.html
This page has links to three other pages: one with basic genetics, the second is a discussion of many specific chicken genes, and the third page has a table of chicken genes with notes about each one.

Thank you! This helped a lot.

 

[nicalandia]

...

The Silkie got into the breeding pen.

How did he get into the breeding pen?