| Subject: Re: crossing golden laced and silver laced. |
Author:
Bryant
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Date Posted: 10:07:11 05/21/08 Wed
In reply to:
alvin
's message, "crossing golden laced and silver laced." on 15:39:17 05/06/08 Tue
Melissa & Alvin-
Genetics are fun, and Melissa has hit on some important points- both that Silver is incompletely dominant over gold, and that it is possible that your friend's silver birds might not be pure. We will assume they are.
Silver/gold is also a sex-linked gene. This means that the offspring vary depending on which way you make the cross, and in one cross all of the male chicks will be one color, while the females will be the other. It is used often in commercial crosses, because the males can be sold to broiler operations, while the females marketed to small farms looking for layers.
Silver is denoted as capital S, while gold is lower case s.
The gene is sex linked because male chicks receive a color gene from both parents, while the females only carry one copy- from her father. This is interesting because the mother has no bearing on whether the pullets will be silver or gold!
SS (silver male) x S (silver female) = silver chicks
SS (silver male) x s (gold female) = Ss- heterogeneous silver males, likely to be brassy in the hackles and s- silver females- Note- all "Silver" chicks
ss (gold male) x s (gold female) = gold chicks
ss (gold male) x S (silver female) = Ss- heterogeneous silver males, and S- gold females- Note- this is the sex-linked cross, and can be made with Buff Columbian & Columbian, Brown Red & Birchen, etc.
If your birds are pure, you will not produce any gold males until the second generation. If you cross a Ss heterogeneous male with s (gold)hens from the original generation or the first cross, you should get 50% gold, 50% silver chicks of either sex. Note that crossing Ss heterogenous males with s (silver) females will produce 50% heterogenous males, 50% "pure"/homogenous silver males, and 100% silver females.
In summary- it is hard to produce golden laced with this cross! If your friend wants to improve the type, I recommend crossing with columbian, or as has been discussed on this forum before, mottled.
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