RELATIONS BETWEEN SELECTED INDICATORS OF BLOOD AND MILK OF DAIRY COWS WITH METABOLIC DISORDERS

Abstract

The aim of this work was to monitor the relations between selected indicators of technological properties of milk and blood biochemical parameters of dairy cows with metabolic disorders. Thirty-two cows were chosen, which were divided into 3 groups: first group - cows with metabolic problems of acidosis, second group - cows with metabolic problems of alkalosis, third group - healthy cows. Blood, urine and milk samples were collected. Urea, total lipids, total proteins, glucose and calcium was determined in the blood serum. Pure acidobasic forms, pH and density of urine were determined. Proteins, lactose, non-fat-solids, somatic cells count, calcium, urea, titratable acidity, fermentability, rennetability and thermostability were determined in samples of milk. Significant negative dependences were observed in the group of cows with metabolic problems of acidosis between urea in blood and in milk (r = -0.694, P <0.05), between calcium in blood and in milk (r = -0.653, P <0, 05), and between calcium in milk and glucose in blood (r = -0.648, P <0.05). In the group of cows with alkalosis, statistically significant correlation between total lipids in blood and fat in milk was found (r = -0.879, P <0.05).