The effect of different doses of tissue bio-stimulant on blood serum protein composition in lactating cows

The science-based economic experiment was conducted in 2019 on the farm of the AO “UchkhozPrigorodnoye”, the Industrialniy District of the City of Barnaul, in the herd of Black-Pied cows of the Priobskiy type. To conduct the experiment, four trial groups of 10 comparable adult dry cows were formed. The following was taken into account when selecting the animals: their age (the 3rd lactation), live weight (550 kg) and the milk production before the dry period (the daily-average milk yield of the lastmilk check before drying-off as much as 22.5 L). The tissue bio-stimulant was administered to the cows in two stages two weeks apart - four times during the dry period and four times during the first 100 days of lactation. The tissue bio-stimulant was administered to the cows as following: in the trial group 1 - in a dose of 15.0 mL per head; in the trial group 2 - 22.5 mL per head; in the trial group 3 - 30.0 mL per head. In the control group, physiological salt solution was injectedin a dose of 22.5 mL per head. The tissue bio-stimulant was made of velvet antler deer slaughterhouse offal in the ultrasound field by using a previously patented method. It was comprised of the placenta, uteri with fetuses, liver, lymph nodes of the mesenterium and mediastinums. The administration of the tissue bio-stimulant to cows during the dry period and in the first 60 days of lactation had a promoting effect on some indices of blood protein metabolism. The dose of 22.5 mL per head should be considered the optimal dose of the tissue bio-stimulant administration; which contributed to increasing the total protein in the blood serum by 6.4-3.0% (p function show_eabstract() { $('#eabstract1').hide(); $('#eabstract2').show(); $('#eabstract_expand').hide(); }