SILKIE colors and what do you get when you cross colors

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kathyinmo said:
No ... they are just chickens ... and I think they are color blind! /img/smilies/lau.gif
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silkies are not good for free range as they cannot see well and will be the first to get eaten or grabbed from above
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Lots of science talk. Makes my brain hurt. I don't know the genetic line of my Silkies. I have a black Roo. A buff hen and a white hen. So from what I have read here....that could produce anything? But black is dominant?
 
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Jewellan said:
Lots of science talk. Makes my brain hurt. I don't know the genetic line of my Silkies. I have a black Roo. A buff hen and a white hen. So from what I have read here....that could produce anything? But black is dominant?
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black with buff would produce black chicks who might have gold leakage as adults. The white with the black would produce black chicks unless the white is hiding a gene that modifies black such as the blue gene
 
Leakage is undesirable correct? I'd like to see pics of what it looks like when there's leakage. The gold part of it all throws me.. I just thought partridge was brown with some red or gold-I've never actually seen one. Is there a way to breed for partridge? I've recently been put under the silkie spell!
 
Question as to what this phenotype/genotype is:

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This is Lion-O. Comb appears to be Dv/Dv, R/R. He is a lovely blonde color on his hackles, wing tips and tail. There are a couple light gray feathers that might be blue or lavender. I think his comb, face and eyes are mostly red due to dilution factors affecting the usual silkie blue skin. His earlobes are white. He has blonde stipling on his back, but his shoulders are silvery white. Plumage is very shiny and hairlike (like a shampoo commercial!). The dark spots on his head are due to medication because other birds were picking on him. I think he's lemon colored, but I'm really curious about the Colombian-like restriction of gold and stipling.

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Wondering also what a cross might look like with recessive white silkies. From what I understand, most recessive white are wild type underneath the epistatic white genes.
 
ChiefSuperFly said:
Leakage is undesirable correct? I'd like to see pics of what it looks like when there's leakage. The gold part of it all throws me.. I just thought partridge was brown with some red or gold-I've never actually seen one. Is there a way to breed for partridge? I've recently been put under the silkie spell!
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Partridge is an odd one because there are multiple definitions of "partridge". At least some of the time, it means wild type (reference the red jungle fowl). There are bunches of genotypes which cause boys to look more or less wild type but not girls, so the best way is to look at "wing triangles" for better indications of what his genotype/phenotype is. Brown Leghorns are another "wild type" "partridge" breed. Even the other definition of "partridge" appears very similar to wild type.
 
Sonoran Silkies said:
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So white is independent of color? So someone mentioned earlier in the thread, I think, that sometimes it does create unpredictable lighter variations (or that's how I interpreted what was said). Is there an unpredictable 'dimmer switch' action
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No, white does NOT dilute. There are two different white genes. Recessive white is indeed an offswitch. Tim can explain it better, but at the cellular level it prevents the formation of all pigment. It can be leaky, allowing a bit in occasionally on a feather here or there, but overall is pretty non-leaky. Dominant white, on the other hand works differently, and is very leaky. It is more like a filter than an offswitch--it doesn't prevent pigment from forming, but it does prevent it from being placed in the feather (Tim, if I got any of this wrong, please correct me). One copy prevents black pigment from entering feathers; two copies also prevents red pigment. Exchequer leghorns are leaky dominant white. Red pyle is dominant white.

My understanding is that black acts similarly in ducks, but that it's incompletely dominant letting some of the original color come through (but that's not what causes the partridge color right?). Does it allow for the lavender variations? OOOOhhhh my head always hurts when I try to go here.
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I don;t know anything about duck genetics, so I cannot relate how chicken genes relate to duck genes--Henk does know both, so maybe he will chime in. Partridge is a hobby name that can mean a couple of different things. If you are talking about a penciled bird such as a partridge rock, wyandotte, cochin or silkie, it is the interaction of a specific​
black allele, e^b (brown) combined with Pg (pattern gene). Lavender is caused by a double dose of lav (lavender).​
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Chicken plumage can contain only two pigments: black (eumelanin) and red/gold (pheomelanin). There is a basic pattern of which of these two colours appear where on the body of a male vs female. Various genes modify which colours go where (extending or restricting the colours to/from these areas), dilute or deepen pigment tint/shade (which may also alter the hue), or create patterns on individual feathers​
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