Effect of modelled stress and adaptogens on microstructural characteristics of pork from fast-growing hybrid animals


  • Anastasia Semenova V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st. 26, 109316, Moscow, Russia, Tel.: +74956766161
  • Tatyana Kuznetsova V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st. 26, 109316, Moscow, Russia, Tel.: +74956766161
  • Victoria Nasonova V. M. Gorbatov Federal Research Center for Food Systems of RAS, Talalikhina st. 26, 109316, Moscow, Russia, Tel.: +74956766551 https://orcid.org/0000-0001-7625-3838
  • Roman Nekrasov L. K. Ernst Federal Science Center for Animal Husbandry Podolsk, Moscow Region, Russia, Tel.: +74967651277 https://orcid.org/0000-0003-4242-2239
  • Nadezhda Bogolubova L. K. Ernst Federal Science Center for Animal Husbandry Podolsk, Moscow Region, Russia, Tel.: +74967651169 https://orcid.org/0000-0002-0520-7022




pork, muscle tissue, myopathy, adaptogen, stress


This research aimed to study the effect of modelled technological stress and the introduction of selenium and dihydroquercetin (DHQ) into pig diets on the microstructure of M. longissimus dorsi muscle tissue. The in vivo experiment was carried out on 36 hybrid young barrows (Large White x Landrace) x Duroc) with an initial live weight of 34 – 36 kg until they reached a weight of not less than 110 kg. The animals were divided into four groups: 1 (C-) – pigs did not receive adaptogens and were not subjected to modelled technological stress; 2 (C+) – pigs did not receive adaptogens but were subjected to stress via relocation of animals; 3 (С+Se) – pigs were subjected to stress and received 0.2 mg Se.kg-1 feed as selenium proteinate in addition to their diet; 4 (С+DHQ) – pigs were subjected to stress and received 32 mg DHQ.kg-1 feed in addition to their diet. The best results regarding the muscle tissue condition were recorded in the musle  L. dorsi samples were taken from the carcasses of group 4 (С+DHQ). Analysis of variance using the Fisher–Snedecor test confirmed that addition of adaptogens led to an improvement of the pH24 value (at p = 0.05, f observed  = 5.90 >fcritical = 4.17) and moisture-holding capacity (at p = 0.05, f observed  = 3.04 >fcritical = 2.92). The effect of long-term addition of DHQ to pig diets (78 days) on the condition of muscle tissue was studied for the first time, which allowed us to conclude its role in the prevention of myopathic changes in the muscle fibre structure.


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How to Cite

Semenova, A., Kuznetsova, T., Nasonova, V., Nekrasov, R., & Bogolubova, N. (2020). Effect of modelled stress and adaptogens on microstructural characteristics of pork from fast-growing hybrid animals. Potravinarstvo Slovak Journal of Food Sciences, 14, 656–663. https://doi.org/10.5219/1388