Relationship of the Chemical Composition of Milk With the Values of Diagnostic Indicators of Metabolism Intensity

Abstract

It was found that, in accordance with the selected analysis criteria, in the studied animal population in 17.05 % of cows, FPR corresponded to the optimal values, and in 82.95 % it deviated to the lower side and amounted to 1.10 or less. FPR tended to decrease as the milk productivity of animals increased, and increased as soon as the milk productivity of animals began to decrease in the dynamics of milk days. In the group of animals with FPR 1.10 or less, the content of BHBA in milk significantly (by 80.0 %, p <0.01) exceeded the content of BHBA in animals with normal FPR val-ues. In cows with a normal FPR value, the level of acetone in milk was higher than the threshold by 28.57 %, while in animals with low FPR values, the established significant excess was 141.43 % (p <0.05). With the deviation of the FPR downward, an average negative reliable relationship of this indicator with the level of acetone was revealed (r = -0.572, p <0.01). Between the content of BHBA and acetone, an average positive significant relationship was established with FPR less than 1.10 and with FPR from 1.11-1.50, and in the first case, the relationship is stronger.