DOMINANT CZ hens are typical layer lines and are based on a common synthetic stock that originates from Rhode Island, Sussex, Plymouth Rock, New Hampshire and Leghorn lines.
The name of every line is defined on a similarity with colour of plumage and egg shell with some kind of native breed.
Actual genetic background of selection programme DOMINANT CZ is created from 8 basical lines:
RIR 523 - (Rhode Island Red) dark brown egg shell
RIW 524 - (Rhode Island White) brown egg shell
BLPR 594 - (Blue Plymouth Rock) brown egg shell
BPR 901 - (Barred Plymouth Rock) dark brown egg shell
SU 493 - (Sussex) Sussex White with yellow skin and brown egg shell
CoL 593 - (Columbian Leghorn) Columbian colour in Leghorn background with white to cream egg shell colour. They are Leghorns with Sussex white colour of plumage and yellow skin.
BrL 300 - (Brown Leghorn) Brown - wild colour of plumage in Leghorn background with white to cream egg shell colour.
NH 222 - (New Hampshire) brown egg shell
BRIR 922 - (Barred Rhode Island Red) dark brown egg shell
WL 529 - (White Leghorn) white egg shell colour
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