Showing posts with label South American Composites. Show all posts
Showing posts with label South American Composites. Show all posts
Wednesday, January 1, 2014
Unraveling the Blues Old School
Our understanding of how this blue egg gene works is much farther along now but I still loved finding this in the archives of the archives this morning!
Reginald Punnett (1933). Genetic studies in poultry: IX. The blue egg
Journal of Genetics 27 (3) : 465 - 470
https://web.archive.org/web/20161020042409/www-old.ias.ac.in/jarch/jgenet/27/465.pdf
Sunday, September 1, 2013
Colloncas are NOT Tuft-less Araucanas
I've been tinkering with rumpless blue egg layers for the past few year. The first few years were spent working towards fibromelanistic, rumpless, blue egg layers. Finally, last fall year I was able to tease apart my flock into those with muffs and those that are clean faced. I began doing some hardcore cyber sleuthing about South American chickens, blue egg layers, and history. I've come to realize we have an unprecedented amount of knowledge and amazing tools at our disposal to actually use that knowledge.
That's a bit of a long-winded introduction to this summary of what I think I know about the birds in my backyard.
Technically speaking, Araucanas are a hybrid of two unique South American chicken "breeds", the Colloncas and the Quetros. Over time Araucanas have become prevalent enough to be a designated and standardized breed. However, the Colloncas and Quetros never reached enough prominence to be formally recognized beyond perceived indigenous colloquialism. There are distinct differences between these two landraces.
There are many websites detailing the history of the Araucana breed, the differences between what North Americans call "Araucanas" compared to everywhere else in the world, and why Ameraucanas aren't Araucanas and Easter Eggers aren't Ameraucanas. (Woe be to Gertrude Stein who wrote, "A rose is a rose is a rose by any other name.")
The fine-tooth comb of poultry politicians seemed fairly pedantic until I began seeing well educated, experienced Araucana breeders saying that a Collonca is simply a tuftless Araucana. That makes about as much sense as saying Holsteins are Texas Long-horns without horns.
When two animals are crossed, their genetic material is picked apart with roulette wheel precision, and then stuck back together with velcro-like accuracy. Breeders don't get to pick and choose qualities a la carte. Herein lies the true art of animal husbandry. Over time the breeder can manipulate the frequency of various phenotypes and eventually be able to reliably produce more or less perfect specimens.
This is where genetic conservation becomes critical because genes and specific combinations of genes can and do get lost without stewardship. The original stewards of the early Colloncas were lived in remote Andean mountain villages. They required animals that could evade jaguars, monkeys, and condors while thriving on minimal supplemental feed. Special birds may have been kept for purposes other than food supply but they would have been tightly coveted.
It has been a mere handful of years that the indigenous tribes of these areas have even been recognized by their governments. Maintaining pure lineages of their chicken flocks has been a very trivial concern as these people tried to just stay alive.
Additionally, in situ preservation is going to be a tremendous challenge thanks to genetic contributions from the industrialized world. High production birds with their genetic homogeneity have found every nook and cranny of the chicken keeping world.
At this point there are two ideological camps among preservationists. The first emphasizes temperament and behaviors and the second emphasizes stabilizing the phenotype of the birds. It is much easier to create a standard for phenotype than behavior.
I would like to think that my approach will ultimately be a complete failure because these birds are so special that they transcend my pale North American capabilities. Perhaps that's true. More than likely I'll eventually have something that merely approximates the work of South American preservationists.
Every time I sit down at my computer and surf the web I find new initiatives, new information, and new knowledge working it's way to the surface. I'm comfortable tinkering with my flock as I know more and as stronger genetic contributions become available. In the meanwhile, I whole heartedly encourage people to start thinking about their chickens in a broader social context. It will make every egg you collect a bit richer, every feather a bit brighter, and every cluck and crow a deeper in meaning.
Some References You May Enjoy
http://www.aviculture-europe.nl/nummers/09E06A13.pdf
http://gallinachilena.cl
http://www.cetsur.cl/?p=737
http://phys.org/news/2013-08-unscrambling-genetics-chicken-blue-egg.html
That's a bit of a long-winded introduction to this summary of what I think I know about the birds in my backyard.
Technically speaking, Araucanas are a hybrid of two unique South American chicken "breeds", the Colloncas and the Quetros. Over time Araucanas have become prevalent enough to be a designated and standardized breed. However, the Colloncas and Quetros never reached enough prominence to be formally recognized beyond perceived indigenous colloquialism. There are distinct differences between these two landraces.
There are many websites detailing the history of the Araucana breed, the differences between what North Americans call "Araucanas" compared to everywhere else in the world, and why Ameraucanas aren't Araucanas and Easter Eggers aren't Ameraucanas. (Woe be to Gertrude Stein who wrote, "A rose is a rose is a rose by any other name.")
The fine-tooth comb of poultry politicians seemed fairly pedantic until I began seeing well educated, experienced Araucana breeders saying that a Collonca is simply a tuftless Araucana. That makes about as much sense as saying Holsteins are Texas Long-horns without horns.
When two animals are crossed, their genetic material is picked apart with roulette wheel precision, and then stuck back together with velcro-like accuracy. Breeders don't get to pick and choose qualities a la carte. Herein lies the true art of animal husbandry. Over time the breeder can manipulate the frequency of various phenotypes and eventually be able to reliably produce more or less perfect specimens.
This is where genetic conservation becomes critical because genes and specific combinations of genes can and do get lost without stewardship. The original stewards of the early Colloncas were lived in remote Andean mountain villages. They required animals that could evade jaguars, monkeys, and condors while thriving on minimal supplemental feed. Special birds may have been kept for purposes other than food supply but they would have been tightly coveted.
It has been a mere handful of years that the indigenous tribes of these areas have even been recognized by their governments. Maintaining pure lineages of their chicken flocks has been a very trivial concern as these people tried to just stay alive.
Additionally, in situ preservation is going to be a tremendous challenge thanks to genetic contributions from the industrialized world. High production birds with their genetic homogeneity have found every nook and cranny of the chicken keeping world.
At this point there are two ideological camps among preservationists. The first emphasizes temperament and behaviors and the second emphasizes stabilizing the phenotype of the birds. It is much easier to create a standard for phenotype than behavior.
I would like to think that my approach will ultimately be a complete failure because these birds are so special that they transcend my pale North American capabilities. Perhaps that's true. More than likely I'll eventually have something that merely approximates the work of South American preservationists.
Every time I sit down at my computer and surf the web I find new initiatives, new information, and new knowledge working it's way to the surface. I'm comfortable tinkering with my flock as I know more and as stronger genetic contributions become available. In the meanwhile, I whole heartedly encourage people to start thinking about their chickens in a broader social context. It will make every egg you collect a bit richer, every feather a bit brighter, and every cluck and crow a deeper in meaning.
Some References You May Enjoy
http://www.aviculture-europe.nl/nummers/09E06A13.pdf
http://gallinachilena.cl
http://www.cetsur.cl/?p=737
http://phys.org/news/2013-08-unscrambling-genetics-chicken-blue-egg.html
Thursday, August 1, 2013
Oona and Starry Night - rumpless, shiny blue egg layers
Oona and Starry Night are half-sisters. Their momma, Rupa, is nearly rumpless. Their fathers are from a unique flock of birds thought to be composites of birds indigenous to South and Central America and the Pacific Isles. These girls are very small, slow to mature, and a bit more wild than a typical bantam.
~*~*~*~*~*~
Oona spent last winter as a house pet in our sun room so she got to "help" unwrap presents Christmas morning. She has dark skin and wild pattern plumage. Her stint as a house pet has given her a prima donna complex but typically she is exceptionally silent.
Star is a few months older than Oona and she stayed in the Aikiko Project House over the winter. She carries the mottling gene and has the tell tale white dots and white skin. Her brother, Xeryus, also carries the mottling gene but he has dark skin. He is equally rumpless.
It took Oona and Star both almost a full year to start laying. This is consistent with my experience with the mother, "Rupa" and sister "Cerci". It is interesting to note that Rupa's eggs are a rather pale, matte blue with a slight green tinge. All of her daughters lay shiny blue eggs without a hint of green.
These girls are part of the Aikiko Project but the project is paused until fall. The Aikiko Project is a hatching eggs / genetics learning collaboration. Participants contribute information about their hatches, help puzzle out the genotypes of project birds, and guide project development. The project group currently functions using facebook, ancestry.com, and photobucket. A dedicated website is being developed for the fall.
Friday, July 12, 2013
The Aikiko Project
The Aikiko Project was a counter top hatching eggs, chicken genetics learning collaboration for curious chickenistas (plus, those chicks are just pretty darn cute!).
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July 12, 2013 The Aikiko Project is a hatching eggs / genetics learning collaboration. Participants contribute information about their hatches, help puzzle out the genotypes of project birds, and guide project development. The project group currently functions using facebook, ancestry.com, and photobucket. A dedicated website is being developed for the fall.
Thursday, April 4, 2013
Aikikos
A bit of genetic history...because I just can't help it... The first hen was named Aikiko. She was just a sweet little wheaten hen from a hatchery mix but she laid these delicate, faintly blue eggs and a nice beard.
Her daughter "Etsuko" is a product of Aikiko crossed with a black silkie roo (named "Katie"). Etsuko is a black smooth feathered,clean legged hen who lays turquoise eggs. Etsuko's babies tend to have feet like silkies and are occasionally are dark skinned and always bearded.
Her son "Romeo" is a product of Aikiko crossed with a nearly rumpless wheaten araucana (?) named "Rupert". Romeo was light skinned with a feather pattern similar to silver duckwing.
Etsuko and Romeo together produced both the roosters I've carried forward into the breeding project this year. There are details about these Yukidama and Zulema in the description below.
Currently the Aikiko house has three hens and two roosters:
Etsuko, Etsuko's grand-daughter "Orchid" (blue salmon daughter of Ocoee x Tuco - a Silkied Ameraucana) and a small gray wheaten easter banty hen named "Opal" are in the breeding area with the Yukidama and Zulema.
Yukidama is a homozygous recessive white, rumpless, dark skinned, snowball hatched in time for New Year 2012). He descends from Aikiko x Rupert - a nearly rumpless "true" aruacana.
Zulema is a black and gold rumpless with very dark skin. In addition to being a sweetheart, Zulema makes a very interesting sound when he's trying to impress the ladies. He goes "wupp wupp wupp". It's different from any others I've ever heard and I'm curious as to how this vocalization carries into future generations.
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