1 What makes a good mother? Maternal behavioural traits important for piglet survival 1 2 Marko Ocepek * , Inger Lise Andersen 3 4 Norwegian University of Life Sciences, Department of Animal and Aquacultural Sciences, PO Box 5 5003, 1432 Ås, Norway 6 7 * Corresponding author: Marko Ocepek, e-mail: marko.ocepek@nmbu.no, Tel: +47 41430972, Fax: 8 +47 64965101 9 10