A mink farming plant comprising: - at least one longitudinal row (2a,2b) of mutually laterally spaced mink cages, each having a front wall, a rear wall, a top wall, a bottom wall and opposite side walls (22,122,222;23), at least the side walls being wire-mesh walls with crossing wires (24,124,224:25) defining mesh openings, preferably rectangular mesh openings, with a mesh width and a mesh height, and each cage having an inner side (27, 127, 227) facing the interior of the cage and an outer side (28, 128, 228) facing outwards, and where a nest box is attached to the front wall, the nest box having a nest box bottom and a nest box rear wall with a nest box opening, such as a circular opening, of such a size that both kits and full-grown minks are free to move between the nest box and the cage, - a drinking water line (10,110,210) running along the row (2a,2b) of cages, said line being part of a drinking water system, preferably a drinking water circulation system, said drinking water system comprising a pressure inducing means, such as a pump, for supplying the drinking water line with water under pressure, and - a drinking valve (18,118,218) comprising an inlet at a first end and an outlet at a second opposite end, said inlet being arranged and secured on the inner side (27,127,227) of one of the side walls (22,122,222;23) of the cages outside the nest box, the inlet of said drinking valve being connected to the drinking water line (10,110,210) via a branch-off line (15,115,215) branched off from said drinking water line, said drinking water valve further comprising the downward-facing outlet and in connection therewith a downward-facing protruding activating pin (31,131,231), and where the valve is configured for being opened by a light axial and/or lateral touch or force applied on the activating pin, and as a result of the opening of the valve water is delivered at least in the form of a drop of water, said activating pin (31,131,231) having a lower end positioned 1 to 8 cm, such as 2 to 6 cm, or 3 to 5 cm, above the bottom wall of the cage and in a distance to the nearest point of the edge of the nest box opening of no more than 20 cm, such as of no more 15 cm, of no more than 12.5 cm or of no more of 10 cm. - at least one longitudinal row (2a,2b) of mutually laterally spaced mink cages, each having a front wall, a rear wall, a top wall, a bottom wall and opposite side walls (22,122,222;23), at least the side walls being wire-mesh walls with crossing wires (24,124,224:25) defining mesh openings, preferably rectangular mesh openings, with a mesh width and a mesh height, and each cage having an inner side (27, 127, 227) facing the interior of the cage and an outer side (28, 128, 228) facing outwards, and where a nest box is attached to the front wall, the nest box having a nest box bottom and a nest box rear wall with a nest box opening, such as a circular opening, of such a size that both kits and full-grown minks are free to move between the nest box and the cage, - a drinking water line (10,110,210) running along the row (2a,2b) of cages, said line being part of a drinking water system, preferably a drinking water circulation system, said drinking water system comprising a pressure inducing means, such as a pump, for supplying the drinking water line with water under pressure, and - a drinking valve (18,118,218) comprising an inlet at a first end and an outlet at a second opposite end, said inlet being arranged and secured on the inner side (27,127,227) of one of the side walls (22,122,222;23) of the cages outside the nest box, the inlet of said drinking valve being connected to the drinking water line (10,110,210) via a branch-off line (15,115,215) branched off from said drinking water line, said drinking water valve further comprising the downward-facing outlet and in connection therewith a downward-facing protruding activating pin (31,131,231), and where the valve is configured for being opened by a light axial and/or lateral touch or force applied on the activating pin, and as a result of the opening of the valve water is delivered at least in the form of a drop of water, said activating pin (31,131,231) having a lower end positioned 1 to 8 cm, such as 2 to 6 cm, or 3 to 5 cm, above the bottom wall of the cage and in a distance to the nearest point of the edge of the nest box opening of no more than 20 cm, such as of no more 15 cm, of no more than 12.5 cm or of no more of 10 cm.