My husband and I are raising about 15 broilers in a chicken tractor out in the field behind our house. They are on grower food now. I feed organic food and two of the feed stores near me only sell organic starter, grower and layer. We plan on butchering our chickens at about 12 weeks (I think, husband does it). Since I'm having a hard time finding finisher food, can I just keep them on grower? One of the feed stores said I need finisher and the other didn't really have any advice (it was just a kid working when I asked). Any insight would be much appreciated!