Costa, LeonardoSottomayor, Miguel2014-06-122014-06-122013-12COSTA, Leonardo ; SOTTOMAYOR, Miguel - The efficiency of the dairy sector in mainland Portugal. In ESADR 2013, “Alimentar Mentalidades, Vencer a Crise Global”, Évora, Portugal, 15-19 Outubro, 2013. CARVALHO, Maria Leonor da Silva ; HENRIQUES, Pedro Damião de Sousa ; NARCISO, Vanda (coords.) - Alimentar Mentalidades, Vencer a Crise Global – Atas do ESADR 2013. Évora: Universidade de Évora, 2013. ISBN: 978-989-8550-19-4. p. 547-565http://hdl.handle.net/10400.14/14604A two-stage Data Envelopment Analysis (DEA) approach is employed to analyse the efficiency of dairy farms in mainland Portugal. The data are a 2010 sample from the European Commission Farm Accountancy Data Network (FADN) of 271 Portuguese mainland dairy farms. In the first stage, a directional input distance function and DEA are used to generate overall inefficiency measures and decompose them for each farm. In the second stage, the inefficiency measures are regressed on environmentaland/or organizational factors to explain efficiency differentials. Despite environmental and/or organizational differences, results indicate that most dairy farms in mainland Portugal can reduce costs by improving allocative efficiency and pure technical efficiency.engBootstrappingDEAEconomic efficiencyInput directional distance functionPortuguese mainland dairy farmsconference object