I recieved 32 day old cornish game hens on the 24th. I started feeding chick starter... how long do I go before switching to 28% high protein to get them big fast.... and secondly... how long is long enough to allow them to grow before slaughtering. From what I have read it says... 2-2 1/2 lbs can be reached in 3 to 4 weeks. Is this so, or am I miss informered?