CONSOLE_WP3_Task3.1_ Analysis of secondary data_FR_2022.10.22

With this database, we examine the impact of taking feeding into account in the calculation of enteric methane emissions of a panel of French dairy farms and estimate the extra-costs of adding more grasslands in fodder systems. A balanced panel of 735 dairy farms from the farm accountancy data network (FADN) for the years 2016 to 2018 was selected (otexe 45), downloaded online from Agreste. This database is representative for socio-economic and accountancy information of French medium and large farms and is relevant for assessing the financial needs of dairy farms to join a national programme such as Eco-Methane. We compare an indicator constructed using the Eco-Methane methodology with an indicator that only takes into account productivity. The values of the Eco-Methane indicator were collected from the association Bleu-Blanc-Coeur, and allocated to FADN observations based on their location and share of maize in the fodder area. The enteric methane emissions indicator which only accounts for productivity was calculated with FADN variables based on the Tier 2 methodology implemented in the annual French GHG inventories conducted by the Citepa. We use FADN data on production quantities, the factors of production, fodder crop rotation systems and fuel and feed expenses to estimate a variable cost function of milk production to assess marginal costs and evaluate the extra-cost associated with adding more grass in fodder crop rotation systems.