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Once again colors ...
PostPosted: Mon Jul 13, 2009 5:16 am Reply with quote
PerlaNegra
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Greetings to all!

I have a question about the colors of xolo.

Breeder defines color of the puppy based on color. And if the skin is black, and wool (the residual) white or red? In this case the breeder determines color - black. But wool is not black ... Other breeds of dogs color determined exclusively by the color of wool. A hairless xolo - only for color skin. We all know that hair color is not always the color of the xolo. Genotype does not match the phenotype? It can be fixed and the color of hair, too?

Sample.
There are two dogs. Same.
One dog in a white coat, a black-haired skin (or stained). But skin is not visible. Therefore, we determined color - white.

Another dog - naked, black with white bang. If the dog was completely coat, then it would have been white! But we do not see this coat, so consider it a black dog.
That is right? Genotype dog the same color. Phenotype - different ..... For me, it's fantastic!
Embarassed
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PostPosted: Mon Jul 13, 2009 7:07 pm Reply with quote
Gio
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I think there are serious counfusion when it comes to color!!

We must consider that the skin color can get darker if the dog gets a tan!!
Even though we can't say the color of a dog by hair only (because some xolos have no hair at all), I think we can consider it as well.

Usually there is more confusion between bronze, liver, copper, butterfly and spotted colors.

Bronze is the one with brown skin and red or white hair, a bronze dog can have yellow or brown eyes.

Liver is brown as well, but the liver xolos I've seen have like a diluted brown color... Don't know how to explain it Laughing (Hope some one can explain it better than I did or show a picture Laughing)

Coppers (bermejo) have light orange-yellow color and ALWAYS light brown nose; some people confuse light brown xolos with black noses and call them bermejos (copper), when they are bronze or liver. NOt bermejo.

Butterfly and Spotted look a like...
Butterflies have dark skin and light spotts (they have fewer spots than spotted) and Spotted xolos have light skin with dark spots.

Here you can see some pics of xolos, coated and hairless, of different colors. http://www.atletzontli.creatuforo.com/viewtopic.php?t=294

I'll quote anyway...

Gio wrote:

The coated xolo breed standar recognizes all colors, however the AKC has a list of the, we can say, most common colors in this breed.
Includs all colors of hairless and coated. http://www.akc.org/breeds/xoloitzcuintli/color_markings.cfm

*Black
Black color is dominant... diluted black can go from blue to charcoal grey.

Huapanguera (Campos)


Mil Guerrero Bichicori (Mestre)

*Red
The gene causing red and black is the Melanocyte Stimulating Hormone Receptor Gene located in chromosome 5.
This gene has two common alleles E and e... e/e dogs will be red or yellow while E dogs will be black or brown.


Intermediate puppy bred by Renata Magaldi


Intermediate copper butterfly from Jalisco. Photo by Zaik Vicious


"Rocko", Intermediate male owned and bred by Angel Garcia


Salina la Novia del Sol (Mestre)


Coated puppy bred by Alicia Bermudez

*Brown/Chocolate
This color range from dark brown to chocolate, in some breeds its called "liver".
The gene that causes the Brown or Chocolate color is the Tyrosinase Related Protein 1.
This gene also affects the nose, pads and eye rims making them brown as well.

Intermediate chocolate female from Jalisco. Photo by Zaik Vicious


Chocolate standard puppies


Hairless chocolate puppy

*Bronze
Is a common color in the hairless xolo, the skin looks dark brown, without being chocolate.
Bronze dogs usually have red hair, without being a rule since some hairless bronze dogs can have white hair.

Bolontik˙ (Suedan)


Tlitli (Retana)

*Brindle
Brindle is a pattern of stripes which can be red-black brindle, tan-black brindle, wild boar, isabella-black brindle, etc.
Althought the cause of this pattern is not yet completely understood at DNA level, much progress has been made.
The Brindle allele is par of the K (for blacK) series; the presence of brindle is dominant to fawn so only one copy of Kbr (brindle allele) is required, but recessive to K (black).
Brindle can be carried but not expressed, if the allele Kbr is present in a fawn (copper in hairless) dog with or without mask it would be expressed.
It's very hard to distinguish a hairless brindle, however they DO exist...

Ocelotl

*Black and Tan
The black is the main color, the tan is present on eyes, legs, chest, muzzle, and under tail.

Northstar's Benito

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Tollan (Corrales-Martinez)

*Spotted/Piebald
The Piebald are patches on a white back ground, whose pattern of spots occur randomly anywhere on the body, including torso, and are not consistent in size or location, therefore, piebald dogs can have few o many spots. Solid colors are dominant to piebald.
Hairless piebald/spotted dogs might suffer a lot from sun burns due to their light color.
This color is called by some as "cow", however, the correct name is spotted or piebald.

Miniature puppies bred by Renata Magaldi


Argentita (Campos)


Amixtli (Magaldi)

*Butterfly
Butterfly dogs have light colored spots on a dark back ground, usually found on legs, chest or belly, but might also be present on head.
It's recomended less than 20% of white on their body, due to high risk of sun burns.

Quetzalli (Magaldi)

*Tri-colored
Tri-color dogs have a black background with white and tan markings. Tan usually appears over each eye, on cheeks, on each side of the chest, on all four legs and under the tail; the have a white blaze, muzzle band and sometimes on chest or tip of tail.

Tacha (Sanchez)

*Carbonate/Sable
The tip of the hair of a carbonate dog is darker than the base, black or bluish; the fawn can be more or less dark, but never orange.

Blanch-O's Pinata

*Merle (Dapple)
The merle is manifested among mixed with patches of color, with white hair or patches of other solid colors. White patches may or may not be present

Pleca (Mestre



http://homepage.usask.ca/~schmutz/dogcolors.html
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PostPosted: Tue Jul 14, 2009 7:47 am Reply with quote
Gabriel Mestre
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Hi Perla Negra,

You are right! for the last 50 years, selection of color on hairless xoloitzcuintle has been done as you said, using only the information provided by the skin and never taking in count the little hair if exist.

But we must recall that every living hairless xolo has still some hair, even when some times it is to little to be described and also some other times litters can be born without any coated brothers, there are still hair.

So, a chance to chose dogs based on the skin color and the remaining hair at the same time is possible, but very inexact.

In my opinion, the alternatives to get the whole picture of color on xolos are very few. But, there is a manner to know the real color trait of a hairless xoloitzcuintle and it is the DNA test.

Actually there are more than 60 different genetic tests that helps for dog breeding and some of them are dedicated exclusively to find out important information about color.

All best

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Gabriel Mestre Arrioja
http://xolonation.org
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PostPosted: Tue Jul 14, 2009 8:29 am Reply with quote
PerlaNegra
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Gio, Gabriel
Thank you for your answers!
Defining color in xolo really simple.

Xolo black (or gray) color may have a genetic Color: brindle, Black and Tan, Merle ..... But in a pedigree, we write - black (or gray)!
Indeed, a genetic test - the only way to understand it.
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PostPosted: Tue Jul 14, 2009 12:10 pm Reply with quote
s_sedogo_kaspiya
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Hello all!
On Russian forum we much time spoke about colour of dog's skin and colour of her hair. It is truth a lot of scientific theory is written concerning genetics of colour the hairs of the dogs. And practically nothing concerning genetics of colour of dog's skin. I too think, that today sole way to know the real color trait of a hairless xoloitzcuintle - it is the genetic (DNA) test.

_________________
Vladimir Polyakov
Kennel "S Sedogo Kaspiya".
Astrakhan city, Russia.
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Once again colors ...
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