Westin, R., Hultgren, J., Algers, B. 2015. Strategic use of straw increases nest building in loose housed farrowing sows. Applied Animal Behaviour Science 166, 63-70.
In spite of domestication, sows are still genetically programmed to perform nesting behaviour close to farrowing. In order to facilitate nest building, a method for a strategic use of large quantities of straw has been...