I use DuMOR. They have feeds for each age range: Chick, Starter/Grower, and Layer crumbles and pellets. They have age information on the back of their chick feed bags.
Idk if it is the best brand, but it has kept all my chickens are alive and well for a long while :confused:
Don't: -Get the eggs wet
- Use really dirty eggs
-Use cracked eggs
- Use thin eggs
-Take wet chicks out of the incubator
-Handle chicks too much (I know, its...