Production & Management Be careful when you change to different fans in an incubator January 8, 2021 83 Facebook Twitter Google+ Pinterest WhatsApp Linkedin ReddIt Email Print Tumblr Telegram StumbleUpon VK Digg LINE Viber Please enjoy a series of Hatchery Tips provided By Aviagen: Tip 25 One fundamental requirement for hatching good quality chicks is providing the correct eggshell temperature(EST) throughout incubation.