Effi ciency of use of adaptogens of diff erent origins on the meat productivity of cattle

The article is devoted to determining the feasibility and effectiveness of the use of adaptogens of plant and animal origin in the feeding of cattle. A scientific and economic experiment was carried out on bulls of the Kazakh white-headed breed, in the diet of which they were introduced in the form of tinctures (at the rate of 0.01 ml of tincture per 1 kg of body weight) adaptogen levzeya (for animals of the II experimental group), drone homogenate (III experimental group) and pantocrine (experimental group IV), while the animals of group I were assigned to the control group and did not receive supplements. The effectiveness of the use of the tested components was determined according to the weight growth of bulls, the morphological and biochemical composition of blood, and the chemical composition of beef. The results of assessing the live weight of bulls by age periods indicate that young animals consuming a plant adaptogen exceeded control peers by 18 months of age by 18.60 kg (3.72%); animal origin – by 28.50 kg (5.71%; Р ≤ 0.05) and 21.00 kg (4.21%). In all animals participating in the experiment, the blood parameters were within the physiological norms, but with a slight increase towards the upper normative limits in the experimental samples. There is an improvement in the qualitative composition of the final livestock products. Thus, the indicator of the biological usefulness of beef was higher in samples taken from experimental animals by 0.18–0.36 units. (P ≤ 0.05). The greatest nutritional, biological and energy value was characterized by milk obtained from cows, in the diet of which drone homogenate was introduced. Thus, the results of comprehensive studies indicate the effectiveness of introducing adaptogens of both plant and animal nature into the diet, but the best effect was obtained from the use of drone homogenate.

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