+1 for what bob said
I have only been around 1 commercial turkey farm, but I was around it a bunch.
The owner of the farm is not the owner of the turkeys, he gets chick delivered to him for him to raise.
The co that owns the chicks knows how many are delivered and what they should weigh when ready to process.
The person raising the birds is paid a bonus if he exceeds the projected weight, for sure he will not do any harm to the birds as any stress hurts his bottom line.
If I remember correctly the people that own the birds also supply the feed.
One of the growers perks is he gets to keep the droppings. I was only there once when they cleaned out on of the barns and there were dump truck loads of poo.
All the poo was sold to mushroom growers!!!
THANX RICH