gallo livorno exechequer

Tunde73, 5-6-2012 10:08:

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Sì, geneticamente E/E (nero/nero) i+/I (non bianco dominante/bianco dominante). Se lo incroci con una gallina dello stesso colore, il 50% dei piccoli avrà questo colore, il 25% neri (E/E i+/i+) e il 25% bianchi (E/E I/I). Se invece lo incroci con una gallina bianca, il 50% dei piccoli saranno bianchi e il 50% come il tuo gallo. Se incroci con una gallina nera, il 50% dei pulcini saranno neri e il 50% come il padre. Credo sia così, anche dall'esperienza con le Moroseta.

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For the Platenbont Silkies (Moroseta pezzata) it was first simpely assumed it was E/E (S/S*S/-) I/i+
We know e+/e+ (s+/s+*s+/-) I/i+ or I/I is the coloration Pile because the Dominant White gene in single doses and even in double doses not stop (or not stop completely) the red-pigment but it transform the black-pigment to "White".
When we have the genotype E/E (S/S*S/-) I/I or I/i+ we will have a completely Dominant White chicken because a double doses and even a single doses of Domiant White will transform all black-pigment into Dominant White.
What exactely causes the black spots on a Platenbont is still not officially confirmed but it is assumed that it is a mutation of Domiant White I^P/i+ or I^P/I^P with still something unknown (maybe enzymes influenzing the correct working of the mutation !!)

Other mutations on the Dominant White gene are :
I/I^s, I^s/I^s = SMOKEY (fumo)
I^d/I^d = KHAKI (cachi)
I^d/i+, I^s/I^d = DUN/CHOCOLATE (spento)

For the complete genetic basics (in Italiano) see the "guida" here on the forum : sites.google.com/site/colorgenesandfeathers/