In the Central African Republic, wild animals are an important source of protein in human nutrition. Bushmeat trade has become a major element of the informal sector as part of family economy, although diffuse and difficult to quantify. In addition, legislation does not recognise the supply character of this sector for cities and drives it into illegality. This situation (informal, diffuse, and illegal economy) makes it difficult to find a method to identify the economie power of this branch and its impact on wild fauna. Studies conducted in the framework of the PGTCV are based essentially on analysis of household budgets to be able to assess the financial value of consumed bush meat, the share of proteins consumed, and, based on market price, the quantity of biomass consumed. School Surveys during which pupils were questioned about the composition of their family meals made it possible to identify a consumer price index based on the number of daily rations containing bush meat, and reduced to the number of rations containing animal proteins. This simple indicator, which is easy to establish and inexpensive, can be integrated into a series of indicators, departing from an index fund of the bush meat sector.