1. The nesting behaviour of sows and its disturbance by confinement at farrowing;Baxter,1982
2. Ethology in environmental design for animal production;Baxter;Appl. Anim. Ethol.,1982
3. Prostaglandin F2 (alpha) induced nest building behavior in the nonpregnant sow and some welfare considerations;Blackshaw;Int. J. Stud. Anim. Probl.,1983
4. Ein Vergleich des Nestbauverhaltens beim Wildschwein und Hausschwein;Buss,1972
5. A comparison of behaviour in the (Suidae);Fradrich,1974