A good place to start is by changing consumption levels as not doing doing so would make things much harder. It’d be difficult to maintain current consumption levels with slow-growing birds as it’d require a much larger number of chickens to be slaughtered
Maintaining this level of consumption entirely with a slower-growing breed would require a 44.6%–86.8% larger population of chickens and a 19.2%–27.2% higher annual slaughter rate, relative to the current demographics of primarily ‘Ross 308’ chickens that are slaughtered at a rate of 9.25 billion per year.
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In sum, without a drastic reduction in consumption, switching to alternative breeds will lead to a substantial increase in the number of individuals killed each year, an untenable increase in land use, and a possible decrease in aggregate chicken welfare at the country-level scale
A good place to start is by changing consumption levels as not doing doing so would make things much harder. It’d be difficult to maintain current consumption levels with slow-growing birds as it’d require a much larger number of chickens to be slaughtered
https://royalsocietypublishing.org/doi/full/10.1098/rsos.210478#d1e265