FEATURES OF METABOLISM IN REPLACEMENT HEIFERS AT GROWTH PERIOD DURING THE APPLICATION OF TISSUE BIO-STIMULANT

The science-based economic experiment was conducted in 2020 and 2021 on the farm of the AO “Uchkhoz Prigorodnoye” of the Altai Region on replacement young Black-Pied cattle. Two groups of 10 one-month old heifers with an average live weight of 51.3 ± 1.48 kg were formed. The tissue bio-stimulant was administered to young animals of the trial group according to the following scheme: at the stage from the 1st to 5th month of rearing - at a dose of 3 mL per head, 6th to 11th months - 6 mL per head, 12th to 15th months - 12 mL per head, and from 16th to 18th month - 15 mL per head. In the control group, physiological salt solution was injected according to the similar scheme. The tissue bio-stimulant was made using ultrasound from velvet antler deer by-products and slaughterhouse offal as placenta, uterus with fetuses, lymph nodes, spleen and blood. The administration of the product under study to the replacement heifers of the trial group contributed to increased total protein in the blood serum on the 14th day after injection; at the age of one month - by 2.1% (p ˂ 0.01); at 6, 12 and 18 months - by 2.3% (p ˂ 0.01), 7.5% (p ˂ 0.01) and 5.9% (p ˂ 0.001), respectively, compared to similar values in the blood serum of the control group animals. The administration of the tissue bio-stimulant contributed increase glucose content in the blood serum of the replacement young animals of the trial group during the studied age periods by an average of 3.6-22.6% (p ˂ 0.01) as compared to the control group animals.