If your going to sell to the public you need to have a commercial liscence to operate a business. Buying and selling.
Many of us on here hatch, we buy and sell chicks and hatching eggs on a regular basis but we generally don't make enough money at it to concern the government or other interested officials who are concerned with tax collection.
If your goal it to be like Ideal or McMurry then yes you need one.
So check with the Alberta Ministry of Agriculture, or whatever the exact wording of their title is.
Many (at least) provinces have regulations as to how many eggs or chicks you can sell per year without having to have an, I dunno, license or whatever it is. Couldn't offhand tell you about ALberta specifically.
Most people can sell their own chicks on a small scale without needing a license. However, if you are talking about shipping chicks and offering many varieties, you need to contact you government for information. it's better to be safe then sorry.