[Electrolyte composition of cow and calf tissues in health and in acute digestive disturbances].

Sodium, potassium, calcium, magnesium, manganese, zinc and chloride contents in the blood plasma of calves at parturition have been established to correspond to their levels in blood of cows during their calving period. Iron and inorganic phosphorus contents in calves blood plasma appeared to increase and copper content to be lower in this period as compared to postnatal period. By the third day of postnatal ontogenesis sodium concentration in calves blood decreased, copper level increased and the rest indices of water-salts metabolism in calves and adult animals were alike. Digestion disturbances in the calves were accompanied by changes in levels and magnitude of Na+/K+ ratio, magnesium, iron, copper, manganese and zinc contents in blood, liver and kidneys as well as Ca++/Pi ratio in mitochondria and cytosol of liver and jejunum mucose layer cells in comparison with clinically healthy animals.