The Official Forum of the Ameraucana Breeders Club > Breeding
Partridge Ameraucana
angora831:
A question for the genetics gurus out there. In my cross of Partridge Plymouth Rock x Black Ameraucana I know that in theory I should get 25% that will be Partridge Ameraucana and at this point 25% that are pretty much yellow in color with my F1 crosses.. I am getting what appear to be blue chicks, chicks that are all black and some that are a darker brown without the partridge markings at this time. Genetically speaking what colors could I expect from the middle 50% of the crosses that would be heterozygous(???) from the F1 breedings.
This is all new ground for me and I know except for the Partridge chicks the others will be mutts, but just thought a question in theoretical genetics would be interesting.
Ken
Jean:
Ken,
Have you used the kip calculator???
http://kippenjungle.nl/kruising.html?mgt=Sloc:s+/s+,Iloc:i+/i+,Eloc:E^R/E^R&fgt=Sloc:s+/-,Iloc:i+/i+,Eloc:e+/e+
Mike Gilbert:
--- Quote from: angora831 ---A question for the genetics gurus out there. In my cross of Partridge Plymouth Rock x Black Ameraucana I know that in theory I should get 25% that will be Partridge Ameraucana and at this point 25% that are pretty much yellow in color with my F1 crosses.. I am getting what appear to be blue chicks, chicks that are all black and some that are a darker brown without the partridge markings at this time. Genetically speaking what colors could I expect from the middle 50% of the crosses that would be heterozygous(???) from the F1 breedings.
--- End quote ---
Ken, that 25% ratio applies only to each of the different genes need to make partridge color. If you do the math you will see how unlikely it is to get all the right genes in one individual. But don\'t be discouraged; you knew this would not be easy. You will get a spectrum of colors by breeding the F-1\'s to each other. I think I might have bred the F-1\'s back to their parents to get quicker results on the feather coloring, and saved the ones with necessary Ameraucana traits like hetero pea combs, dark legs, green eggs, muffs. Unless you plan to hatch many hundreds of chicks this year, you may well be forced to use some F-2\'s next time that are less than optimal with regard to feather coloring. Don\'t be too picky on color this year, otherwise you will run into too-close inbreeding very soon in the project. We\'re pulling for you.
angora831:
Mike, thanks for the encouragement, it is appreciated. In the dark chicks I only have 3 that have shown the partridge markings. Are you saying that the other dark brown chicks could also be \"Partridge\" even though the penciling is not showing? As someone mentioned these 3 partridge chicks that I do have are clean faced and appear to be single combed. Leg color appears to be dark and not yellow. The F1 hens have muffs and beards and are laying mostly blue eggs. An occasional greenish one pops up from time to time.
I still have the original Partridge Rock cock and hens and a few of the Black Ameraucana hens, but no Black Ameraucana cock. I still can breed the F1 back to the originals. Are you suggesting breeding back to the Rocks or Ameraucanas or both to work on the Ameraucana traits and/or color? Thanks for the help, it is always appreciated.
Ken
John:
--- Quote ---Are you saying that the other dark brown chicks could also be \"Partridge\" even though the penciling is not showing?
--- End quote ---
Ken,
I know Mike mentioned \"partridge color\" and I\'m sure that you two are on the same page with this topic.
I just want to mention something that can be confusing with some variety names. Wheaten and birchen are names of varieties (colors/patterns), but also names of the e-locus genes that those varieties and others are based on.
The partridge variety is based on brown (eb), but some used to call this e-locus gene partridge (ep).
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