Calf wet-nurse (10) comprising a container (11) provided with at least one supply opening (12) for on one hand dry powder and on the other hand liquid as well as a delivery duct (13) for the distribution of ready-mixed nutrient solution, wherein the container (11) is provided with at least one mixing duct (181, 182) connected to the container (11), at least one medium passage (191, 192, 193, 194) being arranged between the mixing duct (182, 183) and the container (11). The invention also concerns a method for a calf wet-nurse.