ABSTRACT
Investigations were carried out in 30 ncb breed cows divided into two groups. First group was consisted with cows in good health. In second group there were cows ill with mastitis. Number of somatic cells in milk was evaluated by California Mastitis Test and nucleic acids content in milk and blood by spectrophotometric method. Nucleic acids content in group of healthy cows amounted 273 micrograms/100 ml in milk and 0.114 g/100 ml in blood. In this group correlation factor concerning nucleic acids content in milk and blood amounted r = +0.57. In group ill cows nucleic acids content in milk and blood amounted respectively 500 micrograms/100 ml and 0.140 g/100 ml, and value of correlation factor r = -0.09 was noted. Differences in nucleic acids content in milk and blood between both groups healthy and ill cows correspond to values 227 micrograms/100 ml and 0.026 g/100 ml and were statistically significant by p less than 0.01. Above results allow to formulate the following conclusions: 1. Statistically high correlation between quality of somatic cells and nucleic acids content in milk exists--it is confirmation well known fact. 2. The rise of nucleic acids content in blood of cows can be an index of udder inflammation in cows.
