I have 6 CC's that are just over 8 weeks old, and I fed them a starter/grower feed from Barlett Mills. This feed contains a botanical supplement called APEX(
http://www.bartlettmillingfeed.com/images/apex poultry.pdf ). It is a botanical supplement, and the feed doesn't contain antibiotcs, hormones, or animal derived ingredients. I am guessing that my roos are at least 10 pounds, and the pullets a little smaller. They are not having any leg problems, and I started giving them enough food so that they would have enough food for evenings, but would run out overnight when they were 4 weeks olds I am hoping to harvest this weekend or next.
I have 15 4-week-old CC's and they are 3-4 pounds plus, and I just found out that Barlett Mills makes a meat grower/finisher that you are supposed to start at 6 weeks. My feed store has ordered a couple hundred pounds for me (I have more meat birds coming...), so I should have that next week to begin feeding at 6 weeks. I will be interested to see how they grow compared to the first 6. I don't know what I will do if they grow any faster.
I don't know the distribution area of Bartlett Feed, but their only manufacturing plant is in Statesville, NC, and I live in northeast Tennessee, , so I imagine it is Southeast. The odd thing is that the headquarters is in Kansas City, MO. All I know is that I have been very pleased with the results in the layers (good size eggs and nice hard shells) and in the growth rate of the meaties without the leg problems often associated with them. The price is about $1 more than co-op feed per 50 pounds, and cheaper than
Tractor Supply's DUMOR feed.
I am not looking forward to butchering, but am looking forward to eating a bird that I raised myself. My kids are looking forward to home-grown chicken wings!