The ideal pen size for loose-housed lactating sows

As loose housing of sows around farrowing appears to be the future, the question is what system to use. Pig welfare expert Vivi Aarestrup Moustsen discusses a survey in which experts assessed the ideal pen size for sows. A question, pig producers often ask me is: “What is the best pen for loose-housed lactating sows?” A simple question, with a much more complex answer. There are necessary pen elements and elements that are nice to have. Compare these to those of a car. All cars should hav