[Skeletal mineralization in cattle in 1960 and 1990 based on trephine biopsy data]

Skeleton of cows living in the zone of Kiev Polesye (Woodlands), a comparatively safe area of radioactive pollution, as compared with 1960, was found to have practically the same content of calcium, phosphorus, sodium, copper; the content of potassium decreased, that of zinc was greater; the increased content of magnesium, manganese, strontium and lead was statistically valid. An increased incorporation of magnesium, zinc and manganese and a decreased fixation of iron and potassium were mainly due to changed conditions of feeding and maintenance of the animals, while the increased content of strontium and lead was a result of the increased pollution of the environment.