By cattle, on the same grass lands (no land use change - important), the impact on climate change would be exactly zero vs pre industrial levels.
We could probable have some quantity of near CO2 neutral meat if we wanted to.
When I want beef I buy from a local farmer (grass fed 10km from my home), I don't think removing it would really help the climate vs things I've done like insulating my house, switching to heat pump, remote work, and switching to EV.
To take beef for example (since it usually tops the kgCO2/unit food charts) if we just replaced the millions of bisons exterminated in the USA:
https://theconversation.com/historical-photo-of-mountain-of-...
(30-60 millions bisons to ... about 500).
By cattle, on the same grass lands (no land use change - important), the impact on climate change would be exactly zero vs pre industrial levels.
We could probable have some quantity of near CO2 neutral meat if we wanted to.
When I want beef I buy from a local farmer (grass fed 10km from my home), I don't think removing it would really help the climate vs things I've done like insulating my house, switching to heat pump, remote work, and switching to EV.