Efficiency of natural origin adaptogens for cattle under technological stress

The aim of the research was to study the effect of propolis, urea, egg powder, “Miaroma-R”, a composition of clover seeds, licorice root and lecithin on hematological parameters and productivity of cattle under technological stress in the industrial technology. In the experiment conducted in the Potato Niva Orlovshchina JSC, it was revealed that an increase in the average daily milk yield, which reached 23.3 kg after 40 days from the start of the experiment, was noted in the experimental group of cows who received, in addition to the main diet, the composition “clover seeds + licorice root + lecithin”, which amounted to 0.4 kg (1.75%). The conducted experiments on studying the effect of propolis-based boluses on the milk productivity of Holstein cows under technological stress in an industrial complex showed an increase in the average daily milk yield by 0.3 kg (1.3%). Throughout the experiment, an increase in live weight was observed in fattening bulls from 6 to 12 months with vitamin D deficiency, who received a composition of egg powder at a dose of 100 g per head; urea at a dose of 15 g per head and “Myaroma P” at a dose of 20 g per head by mixing with the feed mixture for 30 days. The bulls of the control group were significantly behind in growth compared to the experimental ones. The weight of bulls in the experimental group after 30 days of feeding was higher by an average of 6 kg (163.0 kg versus 157.0 kg) relative to the control. At the same time, in bulls with vitamin D deficiency, an increase in vitamin D3 (cholecalciferol) from 20.05 µg/kg to 50 µg/kg was noted by the end of the experiment.