Which loose farrowing system is the best?

With ongoing interest in loose farrowing in northern Europe, an increasing amount of pen solutions are available. Which one works best on-farm? Danish researchers built a farm to compare them all; Pig Progress had a sneak preview. Welfare is a fiercely debated topic these days – loose housing of gestating sows, teeth clipping, tail docking, castration, to mention just a few, plus loose farrowing. Now that loose housing of pregnant sows during most, and in some countries, the whole duration of