A magazine with removable inclined frames comprising a plurality of inclined frames arranged side by side in a parking area, each frame having, at its base, a carriage-like structure which carries the inclined frame so that it is mounted on, and slideable in, a pair of rails dedicated thereto in the parking area. The device is provided with a stress measuring device for determining the degree of stress of the animal and for supplying stress measurement data to a storage device for storing stress measurement data. Each partition is wider at its bottom end and extends upwardly and inwardly at an angle to terminate at a narrower apex end. Low dielectric zinc oxide insulator materials are fabricated by doping zinc oxide with a dopant ion having a concentration of at least about 1018 atomscm3, followed by heating to a temperature which converts the zinc oxide to an insulator.