Fig. 2
From: European perspectives on efforts to reduce antimicrobial usage in food animal production
An illustration highlighting the need to interpret country-level differences with care when mg/PCU (population corrected unit) is used as the technical unit. PCU is an estimate in kg of the biomass at risk (a proxy for the size of the food-producing animal population). In the illustration, national antimicrobial usage (in mg/PCU) in three hypothetical countries was very different even though the total biomass and antimicrobial usage within each of three production systems was exactly the same.