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#92829 - 11/22/10 12:10 PM Re: whence came lavender [Re: Hen-Gen]
Henk69 Offline
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Registered: 02/13/06
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Originally Posted By: Hen-Gen
I'll remember that phrase; 'genetic mules'.


I mean this as "animals burdened with genetic experiments" not the sterile bit.

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#92830 - 11/22/10 12:45 PM Re: whence came lavender [Re: KazJaps]
Wieslaw Offline
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Originally Posted By: Kazjaps
As it was stated that this is a recessive mutation, test Isabel Leghorn to known lav/lav line (eg in Belgians, etc) -if all lavender offspring produced, probably lav or lav locus allele


I'm not quite sure about the 'lav locus allele' part. Do you mean that 'lav/another lav allele' would still produce lavender phenotype?

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#92832 - 11/22/10 01:54 PM Re: whence came lavender [Re: Wieslaw]
Henk69 Offline
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Registered: 02/13/06
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Yes, 2 defective genes do not make a functional pair. In general.

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#92848 - 11/23/10 11:42 AM Re: whence came lavender [Re: Hen-Gen]
Sonoran Silkies Offline
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Registered: 10/09/08
Posts: 345
Loc: Arizona
Well, my khaki's (or at least some) do carry gold or golden, as I can see some leakage, but looking at fawn silver duckwing OEGBs at various shows, which should be pure silver, they are a taupe hue, not at all a bluish hue.


Edited by Sonoran Silkies (11/23/10 11:44 AM)

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#92852 - 11/23/10 12:58 PM Re: whence came lavender [Re: Sonoran Silkies]
Henk69 Offline
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fawn silver duckwings are one dose dun. Khaki silver duckwings would be almost white.

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#92855 - 11/23/10 04:10 PM Re: whence came lavender [Re: Henk69]
Sonoran Silkies Offline
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Registered: 10/09/08
Posts: 345
Loc: Arizona
hmmm, so breeding could/would produce khakis as well? BTW, I do agree that the dun is not yet sufficiently stabilized in my birds to have eliminated all sorts of genes that could mess up phenotype. Maybe in a decade, lol.


Edited by Sonoran Silkies (11/23/10 04:12 PM)

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#95991 - 04/25/11 07:30 PM Re: whence came lavender [Re: Sonoran Silkies]
KazJaps Offline
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Registered: 08/30/02
Posts: 2799
Loc: Australia
Originally Posted By: KazJaps
I was chasing the line of inquiry that maybe the Blue Belgian Game had the lavender gene (from memory, described as 'self blue' in phenotype), but couldn't determine from text if this was due to the Bl - blue gene without lacing genotype (ie no Pg/Ml in genotype?).


I found my original source of information on Blue Belgian Games (Bruges Game):

Jeffrey, F. (1977) "Bantam Breeding and Genetics", page 202 (under 'Self Blue' heading).
Quote:
Price (1957) reviewed the literature up to that time and reported as follows:

The oldest blue feather coloring of poultry is the true breeding Belgian Blue, found chiefly in Continental large fowl, but also in bantams and ducks of Belgium and Holland. This is the non-laced blue that existed for centuries in the Bruges gamefowl. This class of feather coloring is known under such names as Belgian Blue, Self Blue, Non-laced Blue, True-blue, Even-blue, Pure Blue, Pigeon Blue, Gray Blue, Tru-breeding Blue, Recessive Blue, Stay-blue, and White-blue. In England it is called Self Blue.

It is a recessive color when crossed with black....


Ref:
Price, H.H. (1957). "Blue Feathered Fowl Breeding". ABA Yearbook p. 104.

But, the only blue phenotype I've come across in Bruges Games appear to be Bl - blue, not lavender. Some have been non-laced blue (pg+-ml+), but still not lav/lav. Eg, the following Lemon Blue Bruges Game bantam:
http://users.telenet.be/jaak.rousseau/english%20version/KRIELEN/brugse_vechtkriel.htm

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#116837 - 09/27/17 06:51 AM Re: whence came lavender [Re: KazJaps]
Redcap Online   content
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Registered: 08/14/06
Posts: 952
Loc: Germany
In this Book from Crew (1925) it was mentioned that Dunn (1920 - or 1922?*) wrote about the incidence of true-breeding blue.
https://books.google.de/books?id=zTl9CgA...unn&f=false

* I doubt that he mentioned this in the mice papers
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