The effect of the feed additive "Relikt A®" on the blood and milk parameters of newborn cows

This work is devoted to the study of the effect of the 4% feed additive "Relikt A®", which includes a complex of humic substances, on the morphological and biochemical parameters of blood, the physico-chemical composition of milk, namely, the content of milk protein, fat (their ratio), dry fat-free milk residue, density, acidity and conductivity. As a result of the studies on the 30th day, it was found that with the introduction of a 4% feed additive "Relict A®" into the diet at a dose of 200 mg/kg of live weight, the total protein in the blood serum of the experimental group exceeded the control values by 12,06% (pЈ0,01**), albumin - by 7,86% (рЈ0,05*), globulins - by 14,87% (рЈ0,01**), urea - by 21,33% (рЈ0,05*), calcium - by 17,41% (pЈ0.05*), calcium to phosphorus ratio - by 42,97% (pЈ0,001***), magnesium - by 8,14% relative to control values. According to the physicochemical analysis of milk after 14 days of the experiment, it was noted that the milk protein in the experimental group is higher than the control values by 8,00% (pЈ0,05*), the ratio of fat to protein is lower by 31,90% (pЈ0,05*). On the 30th day of the experiment, it was noted that the milk protein of the experimental group of animals is higher than the control ones by 8,36% (pЈ0,05*), SOMO (dry skimmed milk residue) - by 8,39% (pЈ0,05*), acidity is lower by 11,35% (рЈ0,01**). The introduction of the "Relikt A®" feed additive into the diet at a dose of 200 mg/kg optimizes the biochemical processes of the body of cows in the early period after calving, reduces the risk of ketosis and hypocalcaemia, and ensures the absorption of dietary nutrients, which is expressed in the corresponding physicochemical parameters of milk.