Table 1.

Chicken breeds used in this study respective to breed classification (clustering) models⁷ and ranked by EY/W values.

^an-values are conditional serial numbers assigned to chicken breeds according to the degree of descending EY/W index. ^bTCM traditional classification model, PCM phenotypic clustering model, GCM genotypic clustering model. Breed types as categorized by Larkina et al.⁷: ETB egg, DPB dual purpose, EMB egg-meat, MEB meat-egg, MTB meat, GB game, BTB Bantam, FB fancy. Breeds defined as core breeds are shown in bold, and those grouped by the inflection points clustering are highlighted in a different color.