RCT-informed interventions focused on the poorest will not increase demand for factory farmed meat—only broad based economic growth will do this. So one solution is to focus on micro interventions targeted at the extreme poor.
Another solution is to support the alternative proteins sector in LMICs, which could enable some degree of “leapfrogging” factory farmed meat and reduce carbon emissions.
Is there reason to believe that Nigeria’s population size is more likely to be exaggerated than other LMICs? (Since I imagine the incentives to exaggerate, and weak safeguards against this, exist in many other contexts too)