Hello, does any have much experiance with eathing 12-16 week old dual purpose birds. I have acouple barred rocks a extra black australorp and would like to get some more new hampshire reds to try. I am keeping 2 of each breed I ordered as a test flock. I currenlty have 5 br, 2 nhr, 2 ba, 2 white jersey giants. Any input would be great.