>One question though… How the hell do you grow a 6 lb chicken in 45+- days?! My chicks from around that time are like half the size of the chickens in the rest of my flock.
Use the meat chicken. It is the Cornish-Rock Cross. (pic related left compared to same age egg chicken on right)
It will put on so much meat so fast, all the energy goes to meat building and it is always behind on feather production.
Some caveats:
Males, at 8-10 weeks, females 10-12 and do not let them run around much. They can grow so fast, some have heart attacks literally just fall over and die.
Also, do not mix with other chickens. Their body temp is so high that the other chickens think they are running a fever from high metabolism. They are very warm to the touch from growing so fast. The egg chickens think they are running a fever and will try to kill them in my experience.
Body meat a bit too big for the heart as they get older. You have 8-10 weeks for males, and 10 to 12 for females tops. They don't live long.
Grass is ok, but, feed them well, and pen them for safety…. Also, when really young, limit feed somewhat. They can eat so much they butrst their crops and die.
If you let them go too long, they grow so big they outgrow their hearts, and die. They are a cross meant for meat only, not eggs, and not breeding. (Not sure if they are like a cross between a horse and a donkey making a mule, and they are sterile. Very gently easy to care for though. I keep mine penned like pets in my greenhouse in the winter to keep me company while planting, so they are comfy warm, and I let them out in a very small grass pen in the summer. 8-12 weeks, start to finish.