Let them go to 11 weeks. They grew quickly, but definitely not as quick as the Cornish crosses I raised this spring. When it was all said and done, I had a variety of weights. Some as small as 2 3/4 lbs., some as large as 5 1/2 lbs. Averaged a little over 4 lbs. Much different than the consistent 5 3/4 lbs. of the Cornish this spring. I let them go 7 weeks.
Kept them on a diet of mostly Flock Raiser 20% protein with the occasional addition of Nutrina Super Gamebird 25% protein. They had free access to pasture that included an omega-3 poultry forage from Peaceful Valley. Started at 7 a.m. and had them all in the freezer by 6 p.m. with a few hours lag for beers and a fire. Even though these are smaller than the Cornish, something just felt right about these birds. Their skin is much darker as well. Can't wait to see how they taste.
Cheers