We decided it was time to process our Cornish Rocks from Ideal Hatchery, hatch date June 27th, so they were 10 1/2 weeks old. I wish I had a scale, but we don't, I can guestemate they were between 7-9 pounds each, butchered weight, sans giblets.
After we got the Cornish Rocks processesed, I decided I didn't want to do this again in 2-4 weeks LOL, so we went ahead and also processed the Black Broilers from the same hatch date (I had gotten them to keep one rooster to pair with my DP hens to raise my own meaties next year and also to compare growth rates).
I can say, I much prefer WHITE meat birds. The black feathers left pigment in the pores and it looks rather unappetizing. Here is a pic of the largest broiler next to an average cornish rock.

Excuse the missed feathers and over-hot-water skin, it has been 20 plus years since we butchered chickens
The black broilers are about 3-4 pounds, roughly half the size of the cornish rocks. I think they would have been close in weight in another 3 or 4 weeks.. maybe.
We kept the cornish whole and cut-up the broilers. I finished cleaning and plucking stubborn feathers with a pair of tweezers once we got them in the house.
They were raised together, so I am curious to see if there is a taste difference also. But it will be a while before we can answer that question ... not hungry for chicken for a while I think LOL.
It took my husband and myself, with our teen son halfheartedly helping to pluck, about 3 - 3 1/2 hours to do 9 chickens. I originally had wanted to order 25! I think next time if I convince myself to order 25, I will have to bribe someone to come help butcher for 5 of the chickens LOL.
My goal is to put 52 chickens a year in our freezer (we eat chicken about once a week). I had planned on doing two batches of cornish cross/rocks twice a year (10-20 each batch, spring and fall) and let our hens hatch out the rest during the spring/summer.
Next time we are hoping to have a better set-up with a hoop-house/pen for just the meaties and possibly try free-ranging them when they get big enough (about 6 weeks or so until process day).
We also have 5 BBW turkeys out of the same hatch date. Hoping the biggest is going to be dinner for T-day
After we got the Cornish Rocks processesed, I decided I didn't want to do this again in 2-4 weeks LOL, so we went ahead and also processed the Black Broilers from the same hatch date (I had gotten them to keep one rooster to pair with my DP hens to raise my own meaties next year and also to compare growth rates).
I can say, I much prefer WHITE meat birds. The black feathers left pigment in the pores and it looks rather unappetizing. Here is a pic of the largest broiler next to an average cornish rock.
Excuse the missed feathers and over-hot-water skin, it has been 20 plus years since we butchered chickens

The black broilers are about 3-4 pounds, roughly half the size of the cornish rocks. I think they would have been close in weight in another 3 or 4 weeks.. maybe.
We kept the cornish whole and cut-up the broilers. I finished cleaning and plucking stubborn feathers with a pair of tweezers once we got them in the house.
They were raised together, so I am curious to see if there is a taste difference also. But it will be a while before we can answer that question ... not hungry for chicken for a while I think LOL.
It took my husband and myself, with our teen son halfheartedly helping to pluck, about 3 - 3 1/2 hours to do 9 chickens. I originally had wanted to order 25! I think next time if I convince myself to order 25, I will have to bribe someone to come help butcher for 5 of the chickens LOL.
My goal is to put 52 chickens a year in our freezer (we eat chicken about once a week). I had planned on doing two batches of cornish cross/rocks twice a year (10-20 each batch, spring and fall) and let our hens hatch out the rest during the spring/summer.
Next time we are hoping to have a better set-up with a hoop-house/pen for just the meaties and possibly try free-ranging them when they get big enough (about 6 weeks or so until process day).
We also have 5 BBW turkeys out of the same hatch date. Hoping the biggest is going to be dinner for T-day
