Morphological changes in the liver of bulls after the use of adaptogens

The paper presents the results of a study of the influence of adaptogens of plant and animal nature on the productive qualities of Kazakh white-headed bulls and morphological changes in their liver. 40 6-month-old beef bulls were selected for the study, which were divided into 4 groups: I (control) group of bulls consumed only the basic diet, II — adaptogen leucea safflower, III — drone homogenate, IV — pantocrine at the rate of 0.01 ml per 1 kg of animal body weight. At 18 months, a control slaughter of 3 animals from each group was carried out. During the experiment, it was found that the mass of the paired carcass in the bulls of the experimental groups increased by 11.1–21.7 kg (4.25–8.31%, р ≤ 0.05), the slaughter weight by 11.7–23.0 kg (4.24–8.34%, р ≤ 0.05–0.01), the slaughter yield by 0.9–1.9%. The analysis of the morphological composition of the carcass indicates an increase in the specific weight of its edible part of the carcass: by weight of muscle tissue by 4.0–7.7 kg (4.66–8.97%, р ≤ 0.05–0.01), fat — by 0.7–1.4 kg (4.67–9.33%, р ≤ 0.05). There is a high degree of maturity and high nutritional value of the meat of bulls of the experimental groups. Histological studies of the liver of bull calves indicate that when using tincture from drones, the liver structure corresponds to the norm, while in the control group animals some signs of dystrophic changes without pronounced infiltrations and signs of stagnation were found.

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