[Biochemical analysis in dogs of the beagle breed. 2. The content of Na, K, Ca, Mg, total P, Fe, Cu and Zn in tissue of fetuses and dogs of different ages].

In dog fetuses in the age of 45 and 55 days as well as in dogs in the age of one day, of 28 days, of 6 and of 18 months the content of minerals (Na, K, Ca, Mg, total-P), of Fe, of Cu and of Zn in different tissues (cerebrum, cerebellum, brain stem, lung, heart respectively left and right ventricle, liver, spleen, kidney respectively cortex and medulla, pancreas, M. biceps femoris and M. longissimus dorsi) was analysed. During the prenatal and postnatal development there are changes in the content of the mentioned elements in many tissues, that are necessary for the specialisation for certain functions.