Scientific journal
European Journal of Natural History
ISSN 2073-4972


Dementyev A.V.

Free radical processes play a big role during adaptation with stress reactions involved as its initial stage. Stress condition in animals can develop in connection with certain periods of ontogenesis («physiological stress»). Regarding individual development of animals, their birth and early postnatal periods are stress situations conjugated with basic changes of oxygenic regime of their organism. This is followed by the change in running of free radical reactions, lipids peroxidation.

Atmospheric oxygen is used as electrons acceptor in vital processes of an organism, herewith, oxygen metabolites forming. The free radical oxidation is a regular metabolic process, free radicals, when in minor quantities, are referred to signal molecules. When hyper-produced, radical-superoxide becomes an initial step of a multi-stage process (metabolic cascade) that results in oxidative stress under which oxygen metabolites become high toxic for biological systems. They cause lipids peroxidation, have a damaging effect at tissue and cell level.

Investigations were carried out at Closed Joint Stock «Landrace» in Novosibirsk region. Landrace pigs were the objects of investigations. The animals were selected and grouped by the principle of analogues with regard to origin, breed, productivity, age and live weight. The pigs were kept following the technology for complexes and farms. The blood to examine was taken from aural vein. The content of triglycerides was determined in the blood serum of pigs aged 1, 2, 3, 4, 5 months. The data obtained were processed statistically with the package of applied software Statistica 6 and Excel. The experiment identified the highest concentration of triglycerides in the blood serum of pigs aged 1 month (45,16 %, p < 0,001). This testifies to lipolysis running in Landrace pigs in early periods of ontogenesis.

The work was submitted to international scientific conference «Basic and applied problems meditsyny and biology», UAE (Dubai), 16-23 October 2011, came to the editorial office 19.10.2011.