We took a trip to the feed store today for some basic "research" (and to see if they had any chicks we could sneak home). They're receiving a batch of chicks tomorrow morning, and we were hoping to make a trip back to pick up a couple. I asked if they would be vaccinated against Marek's, and I was told that they would not be. The hatchery vaccinates the parents, and so the chicks end up with passed on immunity. They also suggested medicated feed as well. Is this common, and is this acceptable?