A feed box (2, 26) of the kind that e.g. via one or more supply openings (6) supply feed portions from a feed central via an endless tube conveyor serving a plurality of preferably uniform feed boxes in a livestock stable, the feed box (2, 26) being provided with a lower discharge valve (8, 38) which via one or more down pipes is connected to a feeding position of one or more livestock, preferably pigs, the discharge valve (8, 38) including a valve body (14, 28) which is operatively connected to a common control wire running along an upper end of the feed box (2, 26), wherein the feed box (2, 26) is further provided with a control device adapted for either allowing the operative connection with the common control wire to open the discharge valve (8, 38) by lifting the valve body (14, 28), or to prevent the operative connection with the common control wire from opening the discharge valve (8, 38) by lifting the valve body (14, 28).
