Patterns of outflow of venous blood from the respiratory organs of pigs of breeds landrace and duroc at early stages of postnatal ontogenesis

The study was conducted at the Department of animal anatomy of the St Petersburg state Academy of veterinary medicine. Human cadaver material for the study was delivered to the Department of anatomy of animals FGBOU VO "Saint-Petersburg state Academy of veterinary medicine" from a pig -breeding complex "Idavang agro" D. Nurma, Tosnenskiy district of Leningrad region. Objects for this study included three age groups, according to the periodization of the pig's life (V. Zhelev, 1976; D. C. Blood, 1988; Kudryashov A.A., 1992) - newborns 1 -7 days (early neonatal period); newborns 10-14 days (late neonatal period); newborns 20-28 days (late neonatal period). Weighing from 2000 to 2500. To achieve this task used complex traditional anatomical methods of study: fine anatomical dissection, lazarettgasse, photography and morphometry. The international veterinary anatomical nomenclature (fifth edition) was used to describe anatomical terms. The measurement was carried out using an electronic caliper Stainless hardened with the price of division of 0.05 mm. in the study of the venous channel of the respiratory system of pigs of Land-race and Duroc breeds in the early stages of postnatal ontogenesis, we noticed that the General architectonics of venous vessels is similar to arterial. The veins are several mediastinal. Veins of these organs, as well as arteries, have the main and scattering types of branching. Thus, veins are located in the lungs of pigs Landrace and Duroc breeds similar arteries, but the diameter is much greater than them, especially in the left part of the organ. In the age aspect, the main increase in the diameter of veins occurs in the period from 10-14 days of age to 20-28 days of life from birth.

васкуляризация , свинья , носовая полость , вена , диаметр , отток , vascularization , pig , nasal cavity , vein , diameter , outflow

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