[Livestock and Fisheries News=Reporter Kim Sinji] Recently, as consumer interest in animal welfare has increased, attention is being focused on the eggshell numbers of eggs. The eggshell number is a label introduced from 2018 to allow consumers to easily identify the method of raising laying hens at a glance. The implementation of the eggshell number label was pushed by the government after the pesticide scandal in 2017 to make it easier for consumers to check egg production information. 'Number 1' indicates free-range (free-roaming), 'Number 2' indicates barn (indoor barn raising), 'Number 3' indicates enriched cage (currently 0.075㎡ per bird, with gradual expansion), and 'Number 4' indicates eggs produced in conventional cages (0.05㎡ per bird). According to the eggshell number,