Genetically determined anomaly of the pelvic limbs (shanks and toes) that is a breed trait of numerous breeds (shank‑feathering).
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Genetically determined anomaly of the pelvic limbs (shanks and toes) that is a breed trait of numerous breeds (shank‑feathering).
An area that allows birds to scratch.
All traits except the gonads by which males and females differ externally and in...
The choice of individuals within a population to achieve a defined breeding obje...
The base population within which selection is carried out.
A measured trait or condition used as the basis for selection.
The difference between the mean of a selected group and the mean of the original...