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1 . 2021

Dihydroquercetin influence on clinical and biochemical blood parameters of pigs under conditions of stress load

Abstract

In modern society, distress has become a widespread condition that negatively affects the functioning of all systems of the human organism. The study of biological mechanisms and changes in the organism under the influence of stress, as well as methods of their leveling, are relevant in medicine, animal science and veterinary medicine. Pigs are an excellent biological model that is closest to humans.

The aim of the research was to study the hematological and biochemical parameters of pigs out of and under stress, including against the background of daily consumption of the flavonoid dihydroquercetin (DHQ) with feed.

Material and methods. The research was conducted in the experimental yard of the L.K. Ernst Federal Science Center for Animal Husbandry on 3 groups of pigs [F2 hybrid (large whitexLandrace) x Duroc] with an initial body weight of 30-35 kg (n=27). Group 1K consisted of control animals not exposed to stress (n=9); group 2K - control animals subjected to simulated stress by the rearrangement of animals (n=9); group 3O - experimental animals subjected to simulated stress and fed throughout the entire experiment DHQ (32 mg per 1 kg of feed) (n=9). On days 0, 42, and 76, blood was collected from the animals and their hematological and biochemical parameters were studied using conventional methods.

Results. The positive effect of using DHQ in pigs’ nutrition on enhancing the oxidizing function of blood, metabolic intensity, and increasing the endurance of animals under stress conditions has been manifested in maintaining leukocyte level with a higher content of erythrocytes and hematocrit. In animals fed DHQ, alanine aminotransferase activity was lower than in animals not receiving DHQ. Stress led to a significant increase in lactate dehydrogenase activity in group 2K on the 46th day, which was not observed in animals treated with DHQ.

Conclusion. Long-term intake DHQ (up to 72 days inclusive) against the background of stress contributed to the preservation of blood values at the control level (without stress), within the physiological norm.

Keywords:stress, dihydroquercetin, clinical blood parameters, biochemical blood parameters, pigs

Funding. The research was carried out with the financial support of the Russian Science Foundation (project No. 19-16-00068).

Conflict of interests. Authors declare no clear or potential conflicts of interest.

For citation: Nekrasov R.V., Bogolyubova N.V., Semenova A.A., Nasonova V.V., Polishchuk E.K. Dihydroquercetin influence on clinical and biochemical blood parameters of pigs under conditions of stress load. Voprosy pitaniia [Problems of Nutrition]. 2021; 90 (1): 74-84. DOI: https://doi.org/10.33029/0042-8833-2021-90-1-74-84 (in Russian)

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CHIEF EDITOR
CHIEF EDITOR
Viktor A. Tutelyan
Full Member of the Russian Academy of Sciences, Doctor of Medical Sciences, Professor, Scientific Director of the Federal Research Centre of Nutrition, Biotechnology and Food Safety (Moscow, Russia)
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