The Official Forum of the Ameraucana Breeders Club > Breeding
Partridge Ameraucana
Mike Gilbert:
Ken, no, what I\'m saying is that some of those brown chicks will be carrying some of the necessary components to make the partridge color, but not all of the components. The e-locus gene is e^b, but then you have pattern gene (Pg) and mahogany (Mh) as well. All are inherited independently of each other. So instead of 25%, it is 25% X 25% X 25%. That comes out to less than 2 truly partridge chicks per 100 hatched. But since Mh and Pg are dominant genes, you will get more that show evidence of pencilling, but will be heterozygous; they won\'t breed true for those genes. Without looking it up, I don\'t remember if there are any more or not, so somebody can jump in here and help. But they all need to be homozygous (two copies, one from each parent) in order to get a good partridge color that consistently throws good partridge offspring.
Christie Rhae:
I have been reading these posts and finally decided to look up what \"partridge\" was. Wow I love those markings!
Why am I attracted to the impossible long shots? lol
John:
--- Quote ---So instead of 25%, it is 25% X 25% X 25%. That comes out to less than 2 truly partridge chicks per 100 hatched.
--- End quote ---
I remember when I was developing the bantam lavenders I had a 1 in 16 chance of getting a chick with two (maybe more as I recall) of the characteristics required. I hatched lots of chicks that year and got one!
Do your homework and don\'t give up easily.
angora831:
That makes it clearer to me now. I guess I got my 2 out of 100 from the first dozen or so eggs that hatched. On to the next 100!
Back to breeding the F1s back to the original parents. I am trying to wrap my head around the genetics. I definitely want to intensify the Ameraucana traits that these F2 chicks seem to be lacking. I get the impression that these are easier to get, except maybe leg color by going back to good black Ameraucanas. On the flip side if I go back and breed with Partridge Rock stock to possibly bring in more color and pencilling do I then stand the chance of also bringing in stronger yellowing in the legs? Does one breeding go before the other?
I am going to hang on to some of the F2 darker chicks to see how they turn out. If they are heterozygous for the Pg gene and I breed them back to Partridge Rocks that should again increase the chances for homozygous Pg. That may be too simple, but that is what I am thinking right now. The deeper I get into this project the more \"stuff\" I have to contend with, but what else do I have to do make life exciting on the prairie? As always, thanks again folks, your advice is super.
Ken
Mike Gilbert:
--- Quote from: angora831 --- On the flip side if I go back and breed with Partridge Rock stock to possibly bring in more color and pencilling do I then stand the chance of also bringing in stronger yellowing in the legs? Does one breeding go before the other?
--- End quote ---
Ken the gene for yellow skin epidermis is present in all your F1\'s from the initial cross; it is recessive and does not show because there is only one copy instead of the necessary two that would make it show. If you are careful to use only those birds from the F2 generation without yellow skin, the cross back to Partridge Rocks will result in half with yellow shank epidermis and half without. All those without will be like the F1\'s : carriers. That is something you can breed out later through test matings. As long as you are not breeding crosslings with yellow skin you will make progress.
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