In poultry, males have two sex chromosomes (ZZ) while females have one (ZW).
Known as "German Kennhuhns," these show very distinct down colors at hatch.
While both allow for easy sorting, they are genetically distinct: autosexing
Breeds like the Rhodebar, Welbar, and Wybar follow similar naming and genetic conventions. Autosexing vs. Sex-Linked Hybrids
Because the barring gene is carried on the Z chromosome, a male chick receives two "doses" ( BBcap B cap B In poultry, males have two sex chromosomes (ZZ)
Research indicates that (made possible by autosexing) can lead to improved production traits. For instance, separate rearing can contribute to higher final body weights in females and better carcass uniformity in broiler lines.
The majority of autosexing breeds rely on the . Autosexing vs
Females typically have a dark, sharp "chipmunk" stripe; males are paler and often have a diffuse white spot on their heads.