[Effect of ultraviolet-irradiated milk on the macroelements, alkaline phosphatase, vitamin D and density of the bones in calves].

Comparative experimental investigations, including 70 experimental and 70 control calves aged 15 to 105 days, aiming to establish the effect of ultraviolet irradiated milk on Ca, inorganic phosphorus, magnesium and vitamin D contents, alkaline phosphatase activity and the density of the distal radius part, carpal and metacarpal bones and tail vertebrae, were performed. It was established that ultraviolet irradiated cow milk has a favourable effect on the physiological state of young calf organism and leads to higher blood serum Ca, inorganic phosphorus, magnesium and vitamin D contents, enhances alkaline phosphatase activity and stimulates osteogenesis processes.