The invention provides a device for movement control of a nursing sow and which enables a loose-housing system as well as stimulation of natural behaviour of farrowing and nursing sows. At the same time, the mortality of sucking pigs caused by squeezing under the sow is kept at a low level corresponding to conventional farrowing pens. At the delimited first long side, the nursing bed (2) is provided with a support device (20) which substantially follows the shape of the sows back in the lying position, preferably a curving support device, and at the second long side, the nursing bed is provided with at least one means (7) for movement control, which by action of the sow may be displaced away from the nursing bed and which is provided with a stop at a position where the means for movement control in the extreme position is disposed immediately outside the second long side of the nursing bed. Since the means for movement control is located immediately at the belly of the sow, the sow will avoid rolling onto the belly. The means fo movement control provides for two nursing beds utilising parts of the same floor area in the pen.
