Yeah Chickengr I ll explain to you to to recreate Silver Cuckoo / Golden cuckoo /Birchen marans from 1 BCM rooster .1 BCM hen and 1 Silver cuckoo hen.
with this trio we can recreate what we want without adding any thing to them for the first 5 years.
YEAR 1 = mate the BCM rooster to the silver cuckoo hen and a BC hen = hatch about 25 chicks from each pair as F1 progeny
BC X BC = 100% BCM =choose the good 1 cockerels and 3 pullets
BC rooster X Silver cuckoo hen = F1 progeny all the pullets are BCM and a cockerels are Gold/Silver Dark bared cuckoo . we select a best cockerel and 3 best pullets.
YEAR2 ( next year ).
BCM = mate the pullet to they sire to produce inbred line 75% of the sire genes .F2 BCPure
BCM = we mate the cockerel we kept with his Dam to produce 75% inbred Dam line .F2 BCPure Pullet
F1 Hybrid = we mate the best Gold/Silver cockerel we kept with his sister F1 BCopper = we get F2 very interesting progeny .
this F2 progeny will have 12.5% silver cuckoo pullets we keep the best 3 pullets. they are F2 SC
12.5% Golden cuckoo pullets.we keep the best 3 pullets. F2 GC
12.5% Birchen pullets .we keep the best 3 pullets.F2 Birchen
12.5% Black copper pullets. we don t keep those one .
Cockerels = 12. 5% impure Silver/Golen cuckoo . we keep the best cockerel he ll be F2 SC
12.5% golden cuckoo .we keep the best cockerel . he ll be F2 GC
12.5% Black copper .we don t keep those one .
12.5% impure silver/Golden Birchen. we keep the best cockerel . he ll be F2 Birchen.
YEAR 3 = very exiting year the start of line breeding;
BCM = Cockerel line we mate the Sire ( who is a grand sire now) to his grand daughter F2 BCPure =to produce F3 pure Cockerels We don t keep the pullets this time only the best cockerel BCPure F3
BCM = Pullets line we mate the Dam ( who is a grand Dam now) ho her grand son F2 BCPure Pullet = we produce F3 pure pullets We don t keep the cockerels this time only the best 3 pullets F3 BC pure Pullets
HYBRID=
SC = we mate the F2 SC pullets to SC impure Silver/Golden cockerel - to produce F3 SC 25% will be pure Silver cuckoo can breed true .
GC = we Mate the F2 GC to a Black copper hen = F3 50% BC and 50% Golden cuckoo
GC = we can mate the F2 GC pullets to A BC rooster = F3 50% each
Birchen = we mate F2 Birchen pullets to F2 impure Silver/Golden Birchen cokerel = F3 50% pure Birchen they breed true from now on
YEAR 4 =
we do the final crossing to establish the traits .
we mate the F3 Silver Cuckoo between them selves to produce F4, for one more time and we see if we need to outcross them ot=r keeping them pure
We mate the Golden cuckoo between them selves to produce F4.
Birchen We mate them together to produce F4 pure Birchen .
YEAR 5 = We ll have a Black copper marans strain
We ll have a Silver Cuckoo Marans strain
We ll have a Golden Cuckoo Maran strain
We ll have a Birchen Marans strain
EST VOILA very simple .study work . 25 chicks minimum of each cross to be on the safe side .
we can move forward any cross we like OR get ready of the cross we don t like .
Hope this information we help some body to recreate new strain rather than waiting for some body else to breed them or import them from France they aren t any of this exotic strain in France only Monique and a Syndicat have them ( the Golden Cuckoo only Monique left )
I m on YEAR 3 = that why I have a lot colorful chooks they are F2 /F3 / and pure
chooks man