Land usage per chicken, difference between free-range vs. intensively reared: 1/12 m^2 vs. 1/17 m^2 Consumer cost, difference between free range vs. intensively reared: 4 euros/lb vs. 2 euros/lb. Does the difference in production costs explain the drastic consumer cost difference between these two methods? Why can't free-range farming be automated like it is in the intensive rearing model?
Some of the large factors that affect production costs are feeding the chicken and e.g. capital costs of the stable, but optimizing production per dollar more or less boils down to getting the “feed conversion ratio” down.
It is about 1,6 for intensively reared chicken in the USA, meaning they have to eat 1,6 kg of food to gain a kilogram of weight (https://en.wikipedia.org/wiki/Feed_conversion_ratio#Poultry)
For comparison, you need two kg of feed to get a kg of eggs, so eggs are about 20% more expensive per kg than chicken meat.
You can’t keep chicken that grow that fast to an age of 80 days, as they would break their legs from excessive weight.
Free range chicken are different breeds that have a higher FCR.