[Field study on loose farrowing in cold barns].

Objective: The aim of this field study was to examine the loose farrowing system in view of practicability, particularly to monitor piglet losses and their causes, on a farm proceeding in accordance with the BIO AUSTRIA production guidelines from summer 2015 until summer 2017. The so-called "Ethobox" (HAKA, Josef Häufele GmbH & Co. KG, Erbach-Dellmensingen, Germany) had been installed into two cold barns with access to outdoor areas.